Vertebrate jaws. Medical search. Frequent questions

Dunkleosteus was named by Jean-Pierre Lehman in 1956 to honour David Dunkle (1911-1982), former curator of vertebrate paleontology at the Cleveland Museum of Natural History. (wikipedia.org)
The origin and early evolution of paravian theropods is one of the most hotly debated topics in vertebrate paleontology. (frontiersin.org)
Today, paleontologists from the University of Kansas and the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing have published evidence in the Journal of Human Evolution shedding light on the long-standing saga of Ekgmowechashala, based on fossil teeth and jaws found in both Nebraska and China. (eurekalert.org)
In the 1990s, Rust's doctoral adviser and co-author Chris Beard, KU Foundation Distinguished Professor and senior curator of vertebrate paleontology, collected fossils from the Nadu Formation in the Baise Basin in Guangxi, China, that closely resembled the Ekgmowechashala material known from North America. (eurekalert.org)

Birds are a type of warm-blooded vertebrate that are adapted to fly. (yourdictionary.com)
any warm-blooded vertebrate of the class Aves, having a body covered with feathers, forelimbs modified into wings, scaly legs, a beak, and no teeth, and bearing young in a hard-shelled egg. (dictionary.com)

Mammals are another type of vertebrate that belong to the class Mammalia . (yourdictionary.com)
In most vertebrates this protein is expressed in muscles that develop from the first pharyngeal arch, including temporalis , which in mammals is the largest muscle of the jaw. (johnhawks.net)
We found a concentration of vertebrate fossils, limb bones and jaws from a variety of mammals," Deméré said. (sandiegouniontribune.com)
One such example is the evolution of the jaw bones in mammals. (tutorialspoint.com)
However, the jaw bones in mammals have an interesting evolutionary history. (tutorialspoint.com)
This is significant because of what happened next: bony fish gave rise to all modern vertebrate fish, along with all amphibians, reptiles, birds and mammals, including ourselves. (wuky.org)
The investigators also state that the developmental primordia from which the premaxilla of nonmammalian tetrapods arises only rarely is involved in forming the upper jaw in therian mammals, instead developing into a motile nose. (medscape.com)
I am a palaeontologist and evolutionary biologist who studies the anatomy, phylogeny, and evolution of fossil vertebrates, particularly dinosaurs, birds, and mammals. (lu.se)

Using synchrotron microtomography, a team of Swedish, Czech, French and UK researchers led by Sweden's Uppsala University took a detailed look at a collection of 400-million-year-old fossils of acanthothoracids - an early fish group closely related to the very first jawed vertebrates - found near the Prague Basin in the Czech Republic a century ago. (cosmosmagazine.com)
Most vertebrate paleontologists today find fossils the same way their predecessors did in the nineteenth century. (nasa.gov)

Lamprey split off from our evolutionary chain more than 360 million years ago so, unlike virtually every other species of vertebrates, they didn't evolve a jaw. (doc.govt.nz)
One being the development of organisms that are invertebrates but evolve to vertebrates. (ukessays.com)
Introduction: Myiasis is a disease caused by larvae of flies in organs and tissues of man or other vertebrate animals, where they install and evolve as parasites. (bvsalud.org)

Except for some groups like birds and lissamphibians , vertebrates usually have teeth in their mouths, [3] although some fish species have pharyngeal teeth instead of oral teeth. (wikipedia.org)
There are over 30,000 species of fish alive today, more than all other vertebrate groups combined. (yourdictionary.com)
The first vertebrates were jawless, but vertebrates now exhibit a variety of teeth and jaws that differ greatly across species in form and function. (cosmosmagazine.com)
Australopithecus and Paranthropus have larger jaw muscles than early Homo species like H. habilis and H. erectus . (johnhawks.net)
Gordodon kraineri is a new genus and species of edaphosaurid eupelycosaur known from an associated skull, lower jaw and incomplete postcranium found in the early Permian Bursum Formation of Otero County, New Mexico, USA. (palaeo-electronica.org)
As other species of fish appeared, they evolved traits such as jaws, an endoskeleton and a vertebral column. (ukessays.com)
I have done fieldwork with colleagues around the world and have described over 20 new species of fossil vertebrates. (lu.se)

The evolutionary roots of teeth and dermal jawbones (cheekbones), the precursor to vertebrate jaws as we know them today, may be older than previously thought. (cosmosmagazine.com)
The work by Vaškaninová and colleagues suggests the jaws and teeth of acanthothoracids, and the way their teeth grew, shared more similarities with bony fish, sharks and even land animals than another early fish group, the arthrodires. (cosmosmagazine.com)
Even though acanthothoracids are among the most primitive of all jawed vertebrates, their teeth are in some ways far more like modern ones than arthrodire dentitions. (cosmosmagazine.com)
in fact, even fossil hominins with the largest teeth and jaws probably shared this genetic change with us. (johnhawks.net)
In the last sentence of their discussion, Stedman and colleagues advanced a provocative hypothesis: Not only did Homo have smaller jaws and teeth, but reducing the jaw muscles may have enabled the evolution of larger brain size. (johnhawks.net)
It has a specialized dental apparatus consisting of large, chisel-like incisors in the front of the jaws separated by a long diastema from relatively short rows of peg-like maxillary and dentary cheek teeth. (palaeo-electronica.org)
In the summer of 2009, they found 500 mammal jaws and 4,000 teeth and skeletal pieces. (nasa.gov)

In this talk, Professor Rayfield described how she and her lab used imaging analysis and computational tools more commonly used to design-test bridges and cars, to describe the function and capabilities of long dead animals, uncovering how dinosaurs fed, how tiny mammal jaws evolved and how the earliest terrestrial vertebrate adapted their skulls for the challenges of life on land. (bbk.ac.uk)

Acanthothoracid dentitions are attached to jaw bones, as in bony fish and land animals. (cosmosmagazine.com)
and bony fish , a lineage that gave rise to all modern fish with jaws and bone skeletons. (wuky.org)

The evolution of jaws -- Lecture 21. (gapines.org)
The evolution of jaws has played a major role in the success of vertebrate expansion into a wide variety of ecological niches. (bvsalud.org)

All amphibians are vertebrates, and they need moist environments or water to survive. (yourdictionary.com)
Iordansky, N.N., Evolyutsiya kompleksnykh adaptatsii: Chelyustnoi apparat amfibii i reptilii (Evolution of Complex Adaptations: The Jaw Apparatus of Amphibians and Reptiles), Moscow: Nauka, 1990. (springer.com)

In non-mammalian jawed vertebrates, the bones homologous to the mammalian middle ear ossicles compose the proximal jaw bones that form the jaw articulation (primary jaw joint). (kcl.ac.uk)
The distinctive features of the jaw apparatus in chameleons (hyperstreptostyly, amphikinetism reduction, transformation of the cranial roof into a "casque," the jugo-mandibular ligament, the shape and position of quadrate bones, and the structure of jaw adductors) emerged as adaptations for the refinement of the mechanism of prey capture by the tongue. (springer.com)
The original jaw bones in early fish were used solely for feeding, with no other function. (tutorialspoint.com)
These jaw bones were simple structures that served to grasp and manipulate prey. (tutorialspoint.com)
Over time, as fish evolved into tetrapod's (four-limbed vertebrates), the jaw bones underwent significant changes. (tutorialspoint.com)

Dunkleosteus could quickly open and close its jaw, creating suction like modern-day suction feeders, and had a bite force that is considered the highest of any living or fossil fish, and among the highest of any animal. (wikipedia.org)
What's fascinating is that the big jaws of many of our fossil ancestors weren't built for nutcracking power. (johnhawks.net)
To these researchers, the estimate held meaning because of its correspondence with early evidence of fossil Homo, which had smaller jaw muscles than earlier hominins. (johnhawks.net)

The gill slits, however, ceased to function as feeding structures, and then later as respiratory devices, as the vertebrate structure underwent evolutionary changes. (britannica.com)

In tetrapod vertebrates , the mouth is bounded on the outside by the lips and cheeks - thus the oral cavity is also known as the buccal cavity (from Latin bucca , meaning "cheek") [2] - and contains the tongue on the inside. (wikipedia.org)

The upper jaw develops from the following 5 main buds of tissue: a single median frontonasal mass (sometimes present as the median nasal processes or frontonasal prominences), the 2 lateral nasal prominences on both sides, and, flanking these, the 2 maxillae (maxillary prominences). (medscape.com)
A fundamental, yet unresolved, question in craniofacial biology is about the origin of the premaxilla, the most distal bone present in the upper jaw of all amniotes. (bvsalud.org)

To explore multiple bite scenarios, we set four different load cases on a 3D model of the cranium obtained via digital photogram-metry, considering the temporalis and masseter muscles as jaw adductors. (researchgate.net)

chordate , any member of the phylum Chordata, which includes the vertebrates (subphylum Vertebrata), the most highly evolved animals, as well as two other subphyla-the tunicates (subphylum Tunicata) and cephalochordates (subphylum Cephalochordata). (britannica.com)

vertebrates and invertebrates . (yourdictionary.com)

In particular, the earliest and most primitive placoderms have great potential to illuminate the evolution of jawed vertebrate traits. (plos.org)

This implies that placoderms may be uniquely informative about the evolution of gnathostome body architecture, the single most dramatic morphological transformation in vertebrate evolution and a key step in our own ancestry. (plos.org)

Their jaw is hinged directly to their skull, unlike all other vertebrates. (yourdictionary.com)
Placoderms, it adds, " had a bony skull and jaw, but most of them had simple beak-like jaws built out of bone plates. (wuky.org)

Vertebrates belong to the phylum called Phylum Chordata . (yourdictionary.com)

Other primates express this gene in their jaw muscles, where it strengthens the bite force. (johnhawks.net)
The change in jaw muscles happened long before our genus arose. (johnhawks.net)
Comparison of hominin crania in superior view, to show the extent of jaw muscles. (johnhawks.net)
For the past almost 30 years, our team has explored numerous functional systems (e.g., jaw muscles and feeding, vascular anatomy and thermal physiology), but our work on the deep-time evolution of neural systems and behavior began in 2003 with an article in Nature on brain structure in pterosaurs and has continued ever since. (lu.se)

Before animals crawled out of the sea and spread onto land, the appearance of jaws marked a significant time in the development of nearly all living vertebrates, including humans. (nationalgeographic.com)
Adult mites live and reproduce on the surface of the soil, whereas the larvae feed on warm-blooded vertebrates, including humans. (cdc.gov)

Animals with a backbone are vertebrates. (yourdictionary.com)
Getting a backbone - the story of vertebrates -- Lecture 20. (gapines.org)

The lower jaw develops from the paired mandibular primordia (mandibular prominences). (medscape.com)

The ontogenetic relationships between the aforementioned features of the jaw apparatus of the chameleons are adaptive correlations, and the evolutionary transformations of these correlations correspond to biological coordinations. (springer.com)

Reptiles are thought to be the first vertebrates to live completely on land. (yourdictionary.com)

Fish are also vertebrates, and they are considered the oldest-known vertebrates. (yourdictionary.com)
Vertebrates range in size from tiny fish to the whales, which include the largest animals ever to have existed. (britannica.com)
Sharks and the cartilaginous skeletoned fishes are representatives of a group of fish whose ancestors were the first jaw-bearing vertebrates. (fishersci.com)
The question of when fish first sported bony jaws - and therefore a mug that we can all recognize - is something scientists have spent time wondering about. (wuky.org)

Vertebrates retain traces of a feeding apparatus like that of tunicates and cephalochordates. (britannica.com)

instead, they use jaw-like structures to attach to hairless areas on the host, secrete digestive enzymes that liquify host epidermal cells, and feed on broken-down tissue and digested cutaneous cells for 2-10 days ( 1 ). (cdc.gov)

Placoderms are considered as the first jawed vertebrates and constitute a paraphyletic group in the stem-gnathostome grade. (plos.org)

Chimeric Zika viruses containing structural protein genes of insect-specific flaviviruses cannot replicate in vertebrate cells due to entry and post-translational restrictions. (cdc.gov)

Odontodes on the palate and lower jaws develop in a series of rows to form a fan-shaped occlusion surface. (newworldencyclopedia.org)
This presumption is supported by the fact that snakes have neither tympanum nor eustachian tube, and the stapes whose proximal end rests in the vestibular window and its distal end attached to the quadrate bone on which the lower jaw swings ( Young, 2003 YOUNG, B. A., 2003. (scielo.br)
After about a week of slowly clearing away the excess rock with dental picks and small chisels, they managed to expose a large tooth from the lower jaw of a big animal. (livescience.com)

Most vertebrate animals don't have nearly as much variation in how their jaws work. (audubon.org)

Neither its bite force, nor how such force might be delivered using relatively elastic cartilaginous jaws, have been quantified or described. (researchgate.net)
We have digitally reconstructed the jaws of a white shark to estimate maximum bite force and examine relationships among their three-dimensional geometry, material properties and function. (researchgate.net)
Although the shark's cartilaginous jaws undergo considerably greater deformation than would jaws constructed of bone, effective bite force is not greatly diminished. (researchgate.net)

Gentry told Live Science they initially had "very little idea" of what they had found - other than it being a large vertebrate. (livescience.com)

However, jaw adductor-generated force in Carcharodon appears unremarkable when the predator's body mass is considered. (researchgate.net)
Designed by H.R. Giger, it has a smooth, elongated head, a vertebrate-esque body, a long, spiked tail, two sets of retractable jaws, and the ultimate weapon: acid for blood. (gamesradar.com)
Specially efficient were, to this effect, objects representing primates with some gross deformation, as, for instance, a chimp's head detached from the body with moveable jaws, a facial chimp mask, etc. (bvsalud.org)

Dicynodontia X: : a large group of advanced, mostly Triassic therapsids with weird jaws. (palaeos.com)
The Placodermi, armoured jawed fishes of the Silurian to Devonian periods (430-360 million years old), are an entirely extinct major group of gnathostomes (jawed vertebrates). (plos.org)
The dentition of lungfish is conspicuously different from that of any other vertebrate group. (newworldencyclopedia.org)

Lungfish, together with coelacanths , are part of the vertebrate class Sarcopterygii . (newworldencyclopedia.org)

At the early stages of embryonic development, the vertebrate face has a common plan. (medscape.com)

This image depicted a left lateral view of a cow's head, on which you can see crusty, rough, cutaneous lesions, in a case of bovine actinomycosis, also referred to as lumpy jaw, caused by the bacterium, Actinomyces bovis . (cdc.gov)

We will focus on major geological and climatic events, alongside critical anatomical developments such as the origin of jaws, and the evolution of fins, that led to explosive radiations in vertebrate biodiversity. (southampton.ac.uk)

This suggests that Z. varolai might have fed upon medium-sized marine vertebrates like other odontocetes. (researchgate.net)

Anatomy5

Organisms5

Diseases5

Information Science2

Paleontology4

Warm-blooded vertebrate2

Mammals8

Fossils2

Evolve3

Species7

Teeth7

Mammal jaws1

Bony fish2

Evolution of jaws2

Amphibians2

Bones5

Fossil3

Underwent1

Tetrapod1

Upper jaw2

Adductors1

Vertebrata1

Invertebrates1

Earliest1

Morphological1

Skull2

Phylum1

Muscles4

Humans2

Backbone2

Mandibular1

Evolutionary1

Reptiles1

Fish4

Apparatus1

Structures1

Placoderms1

Protein1

Lower3

Animals1

Bite force3

Found1

Body3

Group3

Class1

Early1

Head1

Origin1

Marine1