Fossils of multicellular organisms. Medical search. Frequent questions

Scientists have discovered some of the oldest multicellular organisms - and possibly the world's first animals - in 600 million year old Ediacaran fossils from China. (abc.net.au)
In fact since then multicellular fossils have been found in Ediacaran strata, stromatolite fossile have been found in 3.5 billion year strata (and recently multicellualr fossils from 2 billion years BP appear to have been found). (uncommondescent.com)
This creates excitement because, at first look, it seems to make the unsightly problems of the Ediacaran and Cambrian 'explosions' of multicellular diversity less of a problem for evolutionists. (creation.com)
The forms evident among Ediacaran organisms are, for the most part, truly unique - and we are no closer to understanding their place in evolutionary history. (salon.com)
When large, complex fossils were discovered in the Ediacaran, researchers naturally expected that many of them would represent early relatives of the same animal groups that had been recognized in the Cambrian. (salon.com)
Trace fossils of multicellular organisms from an even earlier period, the Ediacaran biota, are also examined. (thoughtmaybe.com)
Our findings support an evolutionary continuity of the multicellular algae from the Ediacaran to the early Cambrian Period. (authorea.com)

One report states that the discovery of the Gabon fossils "moves the cursor of the origin of multicellular life back by 1.5 billion years. (creation.com)
The origin of multicellular life from a group of colonial organisms is a stretch of the imagination and is not based on any physical evidence. (answersingenesis.org)

To reproduce, true multicellular organisms must solve the problem of regenerating a whole organism from germ cells (i.e., sperm and egg cells), an issue that is studied in evolutionary developmental biology. (wikipedia.org)
This means that bacteria are true multicellular organisms just like we are," said Domazet-Lošo. (sciencealert.com)

The first evidence of multicellular organization, which is when unicellular organisms coordinate behaviors and may be an evolutionary precursor to true multicellularity, is from cyanobacteria-like organisms that lived 3.0-3.5 billion years ago. (wikipedia.org)
Unicellular organisms , for example, appear before multicellular ones. (newscientist.com)
For most of our planet's lifespan, however, the life it supported was simple, unicellular organisms without a nucleus. (extremetech.com)

This is the first time paleontologists have found a convincing fossil sponge specimen that predates the Cambrian explosion - a 20-million-year phenomenon, beginning about 542 million years ago, when most major types of animal life appear. (crystalinks.com)
New tools could allow scientists to discover other fossils that significantly predate the start of the Cambrian explosion. (crystalinks.com)
It predicts that we will find lots of fossil remains prior to the Cambrian. (uncommondescent.com)
Actually, Darwinism didn't predict that there would be lots of fossils prior to the Cambrian - at the time of Darwin it was thought that there weren't any fossils before the Cambrian because they weren't known. (uncommondescent.com)
But Darwinism predicted that there would have been life before the Cambrian, based on the fact that fossils of multicellular organisms were found in the Cambrian so there would have been life before then even if it hadn't been left in the fossil record. (uncommondescent.com)
The appearance of multicellular animals occurs in an event known as the Cambrian explosion. (answersingenesis.org)
A wide variety of body plans appears "suddenly" in the fossil record about 550 million years ago-known as the Cambrian explosion. (answersingenesis.org)
The tempo of this biological diversification is still poorly defined because, globally, there are few absolute age constraints that calibrate early Cambrian fossil occurrences or the carbon isotope perturbations used to correlate the biostratigraphy of different continents. (sott.net)
Formally, the base of the Cambrian is now defined by the first appearance of an ichnofossil assemblage that includes Treptichnus pedum , a distinctive branched, bilaterian trace fossil , interpreted as potentially formed by priapulids. (sott.net)
He investigates the evidence from the earliest fossils, which suggest that complex animals first appeared in the oceans around 500 million years ago, an event known as the Cambrian Explosion. (thoughtmaybe.com)
At one time, the animals present in these fossil beds were assigned to various modern animal groups, but most paleontologists now agree that all Tommotian fossils represent unique body forms that arose in the early Cambrian period and disappeared before the end of the period, leaving no descendants in modern animal groups. (viplgw.cn)
A third fossil formation containing both soft-bodied and hard-bodied animals provides evidence of the result of the Cambrian explosion. (viplgw.cn)
Characterization of the multicellular membrane-bearing algae from the early Cambrian. (authorea.com)
The diversity of small shelly fossils (SSF) demonstrates that multicellular organisms underwent large-scale radiation at the beginning of the Cambrian, which is highlighted by the coexistence of various metazoans and the occurrence of their embryo fossils. (authorea.com)
However, little is known about early Cambrian eukaryotic multicellular algae, the primary producers that replaced oxygenic cyanobacteria and played a crucial ecological role in matter cycling and energy dynamics in marine ecosystems. (authorea.com)
In this study, hundreds of microscopic three-dimensionally preserved multicellular agglomerate fossils were obtained from the early Cambrian Kuanchuanpu Formation (535 Ma) in southern Shaanxi, South China, which consisted of several tightly-packed multicellular clusters encapsulated within a thin organic membrane. (authorea.com)

6 The sedimentary layering and large area suggests the Franceville formation is much too large to be post-Flood, (see below for creationist issues surrounding the interpretation of Precambrian fossils). (creation.com)
Older microfossils have since been discovered, but the Gunflint procaryotes remain one of the most diverse Precambrian fossil communities. (geoscienceworld.org)
I showed there that taphonomic conditions should have produced Precambrian animal fossils had they existed. (sott.net)
However, few phototrophic organisms are unambiguously recognized in the Precambrian record. (bvsalud.org)

Asexual reproduction is not, however, limited to single-celled organisms. (sciforums.com)
A change in bird beak shapes is not evidence that reptiles became birds, land mammals became whales, single celled organisms became multi cellular organisms and so on, as claimed by evolutionists. (abovetopsecret.com)
Considering that the oldest known fossils are bacterial biofilms, it is quite likely that the first life was also multicellular, and not a single-celled creature as considered so far. (sciencealert.com)
When and how animal ancestors made the transition from single-celled microbes to complex multicellular organisms has been the focus of intense debate. (technologynetworks.com)
Until now, this question could only be addressed by studying living animals and their relatives, but now the research team has found evidence that a key step in this major evolutionary transition occurred long before complex animals appear in the fossil record, in the fossilized embryos that resemble multicellular stages in the life cycle of single-celled relatives of animals. (technologynetworks.com)
Caveasphaera had a life cycle like the close living relatives of animals, which alternate between single-celled and multicellular stages. (technologynetworks.com)
The revolutionary study explored multicellular life rather than single-celled organisms, in pursuit of a more complete picture of ocean ecosystem resilience, and is published in the journal PNAS . (thefishsite.com)
Discussions of why and how organisms on Earth made the leap from single-celled to multi-celled are of great interests to scientists in multiple disciplines. (extremetech.com)
I'm not sure we yet understand if there is a critical number of cells required to go from single-celled organisms to a multi-celled organism. (ucsb.edu)
Evidence of the single-celled ancestors of animals, dating from the interval in the Earth's history just before multicellular animals appeared, has been discovered in 570 million-year-old rocks from South China by researchers from the University of Bristol, the Swedish Museum of Natural History, the Paul Scherrer Institut and the Chinese Academy of Geological Sciences. (bristol.ac.uk)
All life evolved from a single-celled universal common ancestor, and at various times in Earth history, single-celled organisms threw their lot in with each other to become larger and multicellular, resulting, for instance, in the riotous diversity of animals. (bristol.ac.uk)
This X-ray microscopy revealed that the fossils had features that multicellular embryos do not, and this led the researchers to the conclusion that the fossils were neither animals nor embryos but rather the reproductive spore bodies of single-celled ancestors of animals. (bristol.ac.uk)

The earliest fossils of multicellular organisms include the contested Grypania spiralis and the fossils of the black shales of the Palaeoproterozoic Francevillian Group Fossil B Formation in Gabon (Gabonionta). (wikipedia.org)

Geochemists and paleontologists are on the lookout for "molecular fossils," biochemicals that were resistant to breakdown even during rock-forming processes. (icr.org)
Paleontologists like us are used to working with fossils that would seem bizarre to many biologists accustomed to living creatures. (salon.com)
Despite nearly 70 years of careful study , paleontologists have yet to identify key features among them that would allow us to understand how these organisms are related to modern animals. (salon.com)
In order to better understand these organisms, paleontologists have been forced to adopt a different approach. (salon.com)
Paleontologists continue to search the fossil record for answers to these questions. (viplgw.cn)

Moreover, the surrounding sediment is rich in organic carbon, and contains evidence of eukaryotic organisms as well. (creation.com)
Animals are generally considered to be multicellular organisms that are capable of locomotion in response to their environment (motile), are required to ingest or eat and swallow other organisms to gain proper nutrition (heterotropic), contain within each cell genetic material organized as two sets of chromosomes within a membrane-bound nucleus ( eukaryotic ), develop through a blastula (hollow ball) stage, and integrate muscle tissue, nervous tissue, and collagen into their body. (newworldencyclopedia.org)
Animals are eukaryotic (genetic material is organized in membrane-bound nuclei) and multicellular (comprised of more than one cell), which separates them from bacteria and most protists . (newworldencyclopedia.org)

And as we go farther back in Earth's history, the fossils start to look even weirder. (salon.com)
No, oxygen didn't catalyze the swift blossoming of Earth's first multicellular organisms," begins some news from the University of Copenhagen . (sott.net)
There are different theories about how life first began on Earth, but at approximately this time in Earth's history we begin to see signs of single-cell organisms starting to flourish in the oceans. (lu.se)

All species of animals, land plants and most fungi are multicellular, as are many algae, whereas a few organisms are partially uni- and partially multicellular, like slime molds and social amoebae such as the genus Dictyostelium. (wikipedia.org)
These characteristics resemble those of multicellular algae (e.g. (authorea.com)
They are heterotrophic (unable to synthesize their own food by photosynthesis or chemosynthesis, and feed by consuming other organisms), which separates them from plants and algae . (newworldencyclopedia.org)
Plants include the Algae, unicellular or multi-cellular organisms with a simple structure, and the Embryophytes (terrestrial plants). (geoparcoalpicarniche.org)

Albrecht, together with Prof. Dr. Torsten Wappler of the Hessian State Museum in Darmstadt and other Senckenberg researchers, classified a total of 47,064 fossil leaves of 436 plant species from 16 sites in Central Europe, Iceland, and Norway and examined them for feeding traces left by insects. (phys.org)
They can be composed of multiple species , and we're increasingly finding more ways in which they act like multicellular beings - including division of labour , programmed cell death , and self-recognition . (sciencealert.com)
Evolutionary relationships of animal phyla are based on DNA and molecular evidence due to the lack of fossil evidence of ancestral species. (answersingenesis.org)
However, those humans would be unrecognizable to you and me - our species (homo sapiens) only showed up in the fossil record 1 million years ago! (ucsb.edu)
Attenborough then travels to Canada, Morocco and Australia, using some of the latest fossil discoveries and their nearest equivalents amongst living species to reveal what life may have been like at that time. (thoughtmaybe.com)
The metals induce high sensitivity in most aquatic organisms, while others, such as some microalgae species, evolve towards resistance. (bvsalud.org)

organisms store and translate information using the same code, with only a few minor variations between the most primitive organisms. (newscientist.com)
By this time, multicellular organisms had evolved, but they were primitive: The few fossils left from this period reveal segmented worms, frond-like organisms and round creatures shaped like modern jellyfish. (livescience.com)
They researched 11 specimens of primitive birds from the early Cretaceous whose fossils showed evidence of four wings. (thisviewoflife.com)
This threshold has been exceeded tens of times, perhaps because much of the requisite molecular machinery to facilitate cell-cell coordination is a shared primitive feature of living organisms, but also because some definitions of multicellularity encompass everything from simple bacterial colonies to badgers. (creation.com)

Animals have evolved a considerable diversity of cell types in a multicellular body (100-150 different cell types), compared with 10-20 in plants and fungi. (wikipedia.org)
That diversity in terms of location, climate and geography has given Canada a rich fossil record. (planetsmag.com)
Part two continues in Canada's Rocky Mountains, where fossils document an explosion in animal diversity never seen before or since. (thoughtmaybe.com)
Publication: Jörg Albrecht, Torsten Wappler, Susanne A. Fritz, & Matthias Schleuning (2023): Fossil leaves reveal drivers of herbivore functional diversity during the Cenozoic. (senckenberg.de)

The Ediacara fossil formation, which contains the oldest known animal fossils, consists exclusively of soft-bodied forms. (viplgw.cn)

The other big group is what we call micro-fossils, which are microscopic shells of largely single cell organisms - both plants and animals. (planetsmag.com)
The researchers studied the microscopic fossils using high energy X-rays at the Swiss Light Source in Switzerland, revealing the organisation of the cells within their protective cyst walls. (bristol.ac.uk)

Morphologies in the group have remained much the same for billions of years, and they may leave chemical fossils behind as well, in the form of breakdown products from pigments. (evcforum.net)
6 If these newly-discovered chemical fossils came from sponges and not urmetazoans-and observation demonstrates that sponges can make these sterols-then the "urmetazoan" remains in the realm of speculation, along with the idea that sponges somehow became people. (icr.org)

The fossil discovery was made by scientists at the University of New South Wales, who found what they believe to be evidence of early life in 3.48 billion-year-old hot spring deposits in the Pilbara. (abovetopsecret.com)
Fossils of small feathered dinosaurs like Archaeopteryx and Microraptor link our modern birds with the dinosaurs and have helped scientists map the evolution of birds and of flight. (thisviewoflife.com)
A new study by an international team of researchers, led by scientists from the University of Bristol and Nanjing Institute of Geology and Palaeontology, has discovered that animal-like embryos evolved long before the first animals appear in the fossil record. (technologynetworks.com)
5 Evolutionary scientists have presumed that since these organisms are so simple in structure, the first multi-cellular creatures to have evolved must have been very similar. (icr.org)
Scientists have found, by analyzing the similarities of genes and proteins in different organisms, that some members of a given population will have a trait encoded in their DNA to survive a given environment better . (ucsb.edu)

Had life been designed, though, even organisms that look similar could have turned out to have very different inner workings, just as an LCD screen has a quite different mechanism to a plasma screen. (newscientist.com)
Earth is about 4.5 billion years old and evidence suggests life got going pretty early - microbes at first, then single and multi-celled organisms. (planetsmag.com)
ANCIENT fossil evidence discovered in Western Australia could dramatically change our understanding of how life began on Earth, vindicate a discarded 19th century theory by Charles Darwin and boost chances we find alien life of Mars. (abovetopsecret.com)
The oldest fossil record of life we currently have is over 3.5 billion years old. (evcforum.net)
Or are the reports playing fast and loose with terms such as "multicellular life", and muddying the waters in which multicelled life supposedly evolved? (creation.com)
say that the Gabon assemblage is most likely fossilized colonial organisms, and are thus evidence of multicellular life. (creation.com)
The Gabon fossils have been hailed as multicellular life. (creation.com)
Obviously we have no record of the origin of life, and little or no evolutionary history of the soft-bodied organisms. (answersingenesis.org)
It is hardly surprising, then, that we have so many gaps in the evolutionary history of life, gaps in such key areas as the origin of the multicellular organisms, the origin of vertebrates, not to mention the origins of most invertebrate groups. (answersingenesis.org)
From the creationist perspective, the sudden appearance of complex life and the presence of "living fossils" are totally consistent with biblical creation . (answersingenesis.org)
Multi-cellular life only appears in the fossil record 600 million years ago. (extremetech.com)
any characteristics that would help us understand where these organisms fit in the tree of life. (salon.com)
Life started as molecules that could create copies of themselves , which then organized together in structures called cells that could reproduce copies of themselves, and finally into multicellular organisms that coordinate different cell types in order to create new animals with similar DNA . (ucsb.edu)
Part one begins in a forest near Leicester, UK, where a fossil discovery transformed our understanding of the evolution of complex life. (thoughtmaybe.com)
The fossils, reported this week in Science , preserve stages in the life cycle of an amoeba-like organism dividing in asexual cycles, first to produce two cells, then four, eight, 16, 32 and so on, ultimately resulting in hundreds of thousands of spore-like cells that were then released to start the cycle over again. (bristol.ac.uk)
The origin of multicellular forms of life seems a relatively simple step compared to the origin of life itself. (viplgw.cn)
We learn that fungi emerged from the ocean 4 billion years ago to generate the soil that made terrestrial life possible (a lava bed in South Africa hosts a mycelium fossil that is 2.4 billion years old-the oldest record of a multicellular organism). (oldragmasternaturalists.org)
Life appears abruptly and in complex forms in the fossil record and gaps appear systematically between various living kinds. (icr.org)
Only in the past hundreds of millions of years have animals started to develop, and you can clearly see the different cycles of mass extinctions (often due to climate change) that are followed by life explosions (when many ecological niches open up to new organisms). (lu.se)
Multicellular life is experimenting, and a series of strange organisms emerge, including Dickinsonia and Charnia. (lu.se)

The team of researchers examined each well-preserved fossil leaf for signs of feeding by insects. (phys.org)
Researchers have unearthed a fossil of a sponge, no bigger than a grain of sand, that existed 60 million years earlier than many expected. (crystalinks.com)
Located next to these tubular structures were fossilised microbial biofilms which, the researchers believe, acted as grazing grounds for the multicellular organisms. (uncommondescent.com)
Now an international team of researchers led by evolutionary geneticist Momir Futo from the Ruđer Bošković Institute in Croatia has discovered biofilms develop like a multicellular organism, too. (sciencealert.com)
The researchers analysed more than 5,400 invertebrate fossils, from sea urchins to clams, within a sediment core from offshore Santa Barbara, California. (thefishsite.com)
Researchers believe they may have brought organic material, water or possibly even single-cell organisms to Earth, but nobody knows for sure. (lu.se)

According to evolutionists, as these organisms continued to evolve, they invaded the land and had to overcome the many challenges that they faced there. (answersingenesis.org)
How do evolutionists explain the existence of jellyfish fossils, in view of their argument that soft body tissues of missing intermediate forms did not fossilize? (icr.org)

Cancer is not a recent phenomenon but rather a pervasive disease that has been plaguing creatures probably since the first multicellular organisms evolved billions of years ago. (zmescience.com)

There are also macroscopic organisms that are multinucleate though technically unicellular, such as the Xenophyophorea that can reach 20 cm. (wikipedia.org)
Although the fossils are macroscopic, they do not seem to represent anything other than the basic type of multicellularity, which occurs earlier in time in the form of stromatolites. (creation.com)

Because the first multicellular organisms were simple, soft organisms lacking bone, shell or other hard body parts, they are not well preserved in the fossil record. (wikipedia.org)
Plant-herbivore interactions from the Cenozoic fossil record. (phys.org)
That wrought havoc on Canada's more recent fossil record for mammals. (planetsmag.com)
Zheng Xiaoting from the Shandong Tianyu Museum of Nature, Xu Xing, from the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing, and their associates took advantage of the plentiful fossil record found in China's Jiufotang and Yixian formations to help solve this hind feather mystery. (thisviewoflife.com)
The cyanobacteria have an extensive fossil record. (evcforum.net)
By the close of the Proterozoic, the abundance of stromatolites decreased markedly, though cyanobacteria continued to leave a fossil record, such as Langiella and Kidstoniella known from the Lower Devonian Rhynie chert. (evcforum.net)
Co-author Dr Federica Marone from the Paul Scherrer Institute in Switzerland said, "This study shows the amazing detail that can be preserved in the fossil record but also the power of X-ray microscopes in uncovering secrets preserved in stone without destroying the fossils. (technologynetworks.com)
Either way, fossils of Caveasphaera tell us that animal-like embryonic development evolved long before the oldest definitive animals appear in the fossil record. (technologynetworks.com)
The special creation of diverse organisms and the degree of change within the created kinds over several thousand years is consistent with the evidence seen in the fossil record. (answersingenesis.org)
2009. Fossil steroids record the appearance of Demospongiae during the Cryogenian period. (icr.org)
Old World monkey and ape fossils both appear suddenly in the fossil record. (icr.org)
For example, this theory continues to be propagated regardless of the lack of scientific evidence for transformational forms in the fossil record. (spiritandtruth.org)
Our study emphasizes that the fossil record can be used to test fundamental theories about the origin of biodiversity. (senckenberg.de)
Why does the fossil record not document the series of evolutionary changes during the evolution of animals? (viplgw.cn)
Document from the fossil record the transitional forms leading up to the first fish, from their assumed invertebrate ancestors. (icr.org)

I think the case for some biological connection is strong," Graham Shields of University College London who did not participate in the study tells The Guardian, but rather than a single organism making its way through the rock, the tubes could have resulted from microbial mats or tube-like organisms called Grypania. (uncommondescent.com)

There is a discussion about the possibility of existence of cancer in other multicellular organisms or even in protozoa. (wikipedia.org)

The study reports that invertebrate fossils are nearly non-existent during times of lower-than-average oxygen levels. (thefishsite.com)

A peculiar and entirely soft-bodied suite of fossils from this era are collectively referred to as the Ediacara biota . (salon.com)
One interpretation regarding the absence of fossils during this important 100-million-year period is that early animals were soft bodied and simply did not fossilize. (viplgw.cn)
In fact, fossil beds containing soft-bodied animals have been known for many years. (viplgw.cn)

However shotgun analysis of multiple uncultured genomes from a variety of sources have established that cyanobacteria are part of a much larger group of organisms, and that the photosynthetic branch now called the Oxyphotobacteria appear to have evolved from a common ancestor that did not possess the photosyntheitc machinery of current cyanobacteria. (dhushara.com)
The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old. (evcforum.net)

Instead countless experiments, both planned and unplanned, show that organisms of all kinds evolve and adapt to changing conditions, providing the changes are not too abrupt. (newscientist.com)
Will knowledge of how they and other organisms evolve and adapt help us survive the future? (dalegreenwalt.com)

There's also paleoichnology, which looks at trace fossils - such as the footprints, burrows and trails that animals made in their daily lives. (planetsmag.com)
If the trace fossils are from one of these phylum members, they represent a significant level of "infaunalization" indeed. (sott.net)

Sponges are multicellular sea creatures, but the cells are held together so loosely that they can re-gather after having been blended apart. (icr.org)

By answering these questions, we can begin to understand their biology and ecology, which in turn may provide hints as to how these organisms are related to other multicellular lifeforms. (salon.com)

Trees also offer a substantial amount of ecological niches for other organisms, such as epiphytes, creating a vast amount of habitats. (springer.com)

But for organisms that have been extinct for over half a billion years - such as the Ediacara biota - virtual simulations using CFD are the only approach. (salon.com)

The data are from X-ray tomographic analyses of tubular fossils. (data.gov.uk)

This ambiguity creates confusion: when people ordinarily think of multicellular organisms, they think of animals and plants (and fungi). (creation.com)
Some recent science news stories have come out describing fossils of insects feeding on plants supposedly many "millions of years ago. (icr.org)
These were distinguished based on such characteristics as whether the organisms moved, had body parts, and took nourishment from the outside (animals), or were stationary and able to produce their own food by photosynthesis (plants). (newworldencyclopedia.org)
Animals , plants , fungi , and protists are eukaryotes ( Template:IPAEng or Template:IPAEng ), organisms whose cells are organized into complex structures enclosed within membranes . (wikidoc.org)

Fungi are predominantly multicellular, though early diverging lineages are largely unicellular (e.g. (wikipedia.org)

say that the folded radial structure evidenced in the fossils (figure 2) is too complex for mere inorganic processes. (creation.com)
Co-author Zongjun Yin, from Nanjing Institute of Geology and Palaeontology in China, added: "Our results show that Caveasphaera sorted its cells during embryo development, in just the same way as living animals, including humans, but we have no evidence that these embryos developed into more complex organisms. (technologynetworks.com)
Compared to a human lifespan, evolution is a slow process and so it has taken millions of years for humans, and other complex organism, to evolve. (ucsb.edu)
The latter contains the oldest and largest known fossils of complex, multicellular organisms from 579-560 million years ago. (innoncapelinbay.com)

Multicellular organisms, especially long-living animals, face the challenge of cancer, which occurs when cells fail to regulate their growth within the normal program of development. (wikipedia.org)
There are animals with a mixture of mammalian and reptilian features, such as echidnas , and there are fossils with a mixture of bird and reptilian features, such as the toothy archaeopteryx . (newscientist.com)
A new fossil find shows advanced vision had evolved in animals more than half a billion years ago. (abc.net.au)
Professor Philip Donoghue said: "We were very surprised by our results - we've been convinced for so long that these fossils represented the embryos of the earliest animals - much of what has been written about the fossils for the last ten years is flat wrong. (bristol.ac.uk)
Professor Stefan Bengtson said: "These fossils force us to rethink our ideas of how animals learned to make large bodies out of cells. (bristol.ac.uk)

Lead author Therese Huldtgren said: "The fossils are so amazing that even their nuclei have been preserved. (bristol.ac.uk)

Archaeopteryx and Microraptor both show fossil evidence of feathers on their hindlimbs as well as their forelimbs. (thisviewoflife.com)
However, fossil evidence of these major evolutionary transitions is extremely rare. (bristol.ac.uk)
We evidence bound nickel-geoporphyrins moieties in low-grade metamorphic rocks, preserved in situ within cells of a ~1 Gyr-old multicellular eukaryote, Arctacellularia tetragonala. (bvsalud.org)

Herbivorous insects are the most diverse group of multicellular organisms on Earth. (phys.org)
The feeding traces of such insects are also clearly visible on fossil leaves. (phys.org)
The photographs of the Kishenehn Formation fossil insects that you will find on this site are beautiful, Mother Nature's preservation of the specimens astounding. (dalegreenwalt.com)

Colonial organisms are the result of many identical individuals joining together to form a colony. (wikipedia.org)

As biofilms are responsible for more than 80 percent of microbial infections in our bodies, they would certainly also play a large role in how our friendly bacteria function too, so understanding how these not-so-single organisms develop and work together could help with a myriad of medical problems. (sciencealert.com)

In other groups, generally parasites, a reduction of multicellularity occurred, in number or types of cells (e.g., the myxozoans, multicellular organisms, earlier thought to be unicellular, are probably extremely reduced cnidarians). (wikipedia.org)
One hypothesis for the origin of multicellularity is that a group of function-specific cells aggregated into a slug-like mass called a grex, which moved as a multicellular unit. (wikipedia.org)

This dating corresponds to a time where it is assumed the oxygenic photosynthetic organisms had become numerous enough to globally affect the composition of the atmosphere, but it tells us little about the date at which oxygen photosynthesis, which requires a two photon process to split water actually evolved. (dhushara.com)

Cell division in eukaryotes is different from organisms without a nucleus (prokaryotes). (wikidoc.org)

These fossils are claimed to be about 2.1 Ga old, and are embedded in the sedimentary Franceville formation near Gabon in western Africa, which outcrops over 35,000 km 2 and has a maximum depth of about 2,000 m (figure 1). (creation.com)
The fossils were found closer to the top of the formation in finer-grained layers than those that occur underneath, and have an estimated density at the quarry in which they were found of 40 fossils/m 2 . (creation.com)
The volume of the Franceville formation as a whole, along with the fine sedimentary layers evidenced especially in the upper, fossil-bearing layers of the formation suggest that catastrophic burial is a better explanation than slow deltaic inundation. (creation.com)
The finding of possible multicellular organisms in correlative lithic units in Michigan has recently added to the need for an exact age of the Formation. (geoscienceworld.org)
A slightly younger fossil formation containing animal remains is the Tommotian formation, named after a locale in Russia. (viplgw.cn)
This fossil formation, called the Burgess Shale, is in Yoho National Park in the Canadian Rocky Mountains of British Columbia. (viplgw.cn)

The fossils we studied cover nearly the entire Cenozoic era, i.e., the period between 66 and two million years before present. (phys.org)
The Triassic fossil was discovered in Germany about six years ago and belongs to Pappochelys rosinae . (zmescience.com)
Over 250 fossils, supposedly 2.1 billion years (Ga) old have been found in Gabon, in western Africa. (creation.com)
The first multicellular organisms only evolved about 1 billion years ago, and the first humans appeared about 15 million years ago. (ucsb.edu)
About 500 million years after the first single-cell living things, the first multicellular organisms appeared. (ucsb.edu)
The fossils found were dated more than 300,000 years ago. (bioexplorer.net)

The team discovered the fossils named Caveasphaera in 609 million-year old rocks in the Guizhou Province of South China. (technologynetworks.com)
570 million year old multicellular spore body undergoing vegetative nuclear and cell division (foreground) based on synchrotron x-ray tomographic microscopy of fossils recovered from rocks in South China. (bristol.ac.uk)
Video showing 570 million year old multicellular spore body fossilised while undergoing vegetative nuclear and cell division. (bristol.ac.uk)

What he meant is that the progression over time seen in the millions of fossils unearthed around the world is exactly what evolutionary theory predicts. (newscientist.com)

A membrane would then form around each nucleus (and the cellular space and organelles occupied in the space), thereby resulting in a group of connected cells in one organism (this mechanism is observable in Drosophila). (wikipedia.org)

Anatomy32

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