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ArthropodsCompound Eye, ArthropodEyePhotoreceptor Cells, InvertebrateOcular Physiological PhenomenaArthropod VectorsCrustaceaOptic Lobe, NonmammalianDipteraDrosophilaVision, OcularInsectsDrosophila ProteinsInsect ProteinsEye DiseasesDrosophila melanogasterEye MovementsBeesRetinaPeriplanetaRetinal PigmentsFossilsSpidersPhotoreceptor CellsEye, ArtificialCone OpsinsButterfliesPhylogenyGrasshoppersCockroachesGenes, InsectBiological EvolutionVisual PathwaysSuperior ColliculiLightEye ProteinsPupaArachnidaMolecular Sequence DataOptic NerveHeadFlight, AnimalLarvaEye InjuriesGene Expression Regulation, DevelopmentalWolbachiaOptics and PhotonicsMorphogenesisBiomimeticsDry Eye SyndromesAdaptation, OcularMetamorphosis, BiologicalArthropod ProteinsMutationAmino Acid SequenceMicroscopy, Electron, ScanningRhodopsinBrachyuraAnimals, Genetically ModifiedPhotic StimulationInvertebratesEye AbnormalitiesRod OpsinsMolecular StructureBase SequenceVisual FieldsArthropod VenomsEye BurnsEntomologyXenopusModels, BiologicalBeetlesScorpionsEye EnucleationAnnelidaEye ColorTriboliumHomeodomain ProteinsPhenotypeIsopodaSulfur CompoundsAmberTetranychidaeMotion PerceptionTicksEvolution, MolecularVolatile Organic CompoundsMitesEye BanksPredatory BehaviorElectrophysiologySpecies SpecificityHorseshoe CrabsNerve RegenerationMicroscopy, ElectronSiphonapteraAcariMoltingSymbiosisDaphnia
InsectsAntennaeCrustaceansExoskeletonInvertebratesClass of arthropodsPhylumMollusksCambrianOmmatidiaInsectTRILOBITESPreySchizochroalAnnelidsPredatoryLarge compound eyesVertebrate eyeAnimal speciesEvolutionaryScorpionsHoneybeesSpeciesLobstersOrgansCalciteCentipedesTRILOBITE EYESSegmentsOcelliTicksLimbsComplexSphericalAnomalocarisAnatomySimilarityInvertebrate animalAppendagesBodiesBelongOrganismsEVOLUTIONCommonlyMedianHumansCreaturesOrganCuticleFossilVertebratesDigestive tractStructuresFoundBodyPairs of legsLenses per eyeOptic nerveCrystalline
Insects25
  • The organ's development through the lineage can be estimated by comparing groups that branched early, such as the velvet worm and horseshoe crab to the advanced eye condition found in insects and other derived arthropods. (wikipedia.org)
  • Flying insects can remain level with either type of eye surgically removed, but the two types combine to give better performance. (wikipedia.org)
  • Many insects, such as the female Tabanus lineola, shown here, have dichoptic compound eyes The male Tabanus lineola has holoptic compound eyes, with the dorsal ommatidia larger than the ventral ommatidia In some male mayflies the eyes are split into separate organs for distinct visual functions Stalked dichoptic eyes of a River Crab are typical of mature larger Crustacea. (wikipedia.org)
  • However, like insects, spiders and scorpions belong to the arthropod phylum. (worldatlas.com)
  • Insects also have one pair of antennae and compound eyes. (worldatlas.com)
  • Furthermore, compound eyes take several shapes and curvatures to fit the head and viewing directions of very different types of insects while offering the same functionality. (epfl.ch)
  • Entomology is the study of insects, which are organisms that have an exoskeleton, six legs, three body segments, one pair of antenna, and one pair of compound eyes. (medscape.com)
  • The field of forensic entomology is broadly defined as the application of the scientific study of insects and their arthropod relatives to legal matters. (medscape.com)
  • Evolutionary biologists had viewed the lobopodians as giving rise to arthropods (invertebrates that include insects, arachnids, and crustaceans). (reasons.org)
  • The arthropod, an invertebrate with an exoskeleton and segmented body, may have also preyed on other arthropods with softer shells, distant relatives of today's crustaceans and insects. (nationalgeographic.com)
  • At that time most arthropods, which the insects evolved from, had only two major body divisions, the abdomen and the cephalothorax. (brisbaneinsects.com)
  • One of the very earliest identifying features of insects is the compound eye, found only among the insects and some other arthropods. (brisbaneinsects.com)
  • The popular science media are abuzz about a recent discovery - published in Nature and based on fossils found on Kangaroo Island, South Australia - that Anomalocaris possessed compound eyes similar to those that modern insects and arthropods have today. (evolutionnews.org)
  • Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae. (absoluteastronomy.com)
  • Compound eyes are found among the arthropods (insects and kin), and are composed of many simple facets which give a pixelated image (not multiple images as is often believed). (kids.net.au)
  • One of the defining features of flies, the compound eye is a special organ commonly found in arthropods - the wide, wide world of invertebrates that includes crustaceans, arachnids, and insects . (grunge.com)
  • These features have even inspired scientists and engineers to design cameras that mimic these insects' unique eyes, allowing humans to create surveillance systems that literally act as the proverbial fly on the wall. (grunge.com)
  • Some insects like dragonflies have differently colored parts of their compound eyes, which may help with shading their eyes from harsh sunlight. (grunge.com)
  • Insects, spiders, and crustaceans all belong to the arthropod family. (nittygrittyscience.com)
  • Arthropods form the phylum Arthropoda , which includes the insects , arachnids , myriapods, and crustaceans . (alchetron.com)
  • Most insects have compound eyes and a pair of antennae. (blogspot.com)
  • Insects belong to a larger group of animals called arthropods. (blogspot.com)
  • Other than insects, which are often differentiated by their bodies which have three segments and six legs, examples of arthropods include arachnids like spiders and scorpions, as well as crustaceans like crabs and lobsters. (blogspot.com)
  • Consumption of other arthropods specifically arachnids like spiders (shown below) and scorpions too have the same benefits as eating insects. (blogspot.com)
  • This guide initially displays common arthropods (insects, arachnids, centipedes/millipedes and crustaceans) of all shapes. (peecnature.org)
Antennae8
Crustaceans3
  • Invertebrates with segmented bodies include annelids (segmented worms) and arthropods (bugs, spiders, and crustaceans). (aplaceforanimals.com)
  • Trilobite eyes are best viewed as an amazing evolutionary achievement, and one that remains widespread across crustaceans, insect, and the preponderance of arthropods. (trilobites.life)
  • Arthropods include several different classes: hexapods, arachnids, myriapods and crustaceans. (peecnature.org)
Exoskeleton5
  • An important feature shared by all arthropods is that they have an exoskeleton or external skeleton. (nittygrittyscience.com)
  • An arthropod (from Greek arthro- , joint + podos , foot) is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and jointed appendages (paired appendages ). (alchetron.com)
  • Other new organs such as proboscis 2 , compound eyes and exoskeleton are also developed. (wikidot.com)
  • With a tough exoskeleton, trilobites were one of the earliest known arthropods and quickly spread across the planet thanks to their incredible adaptability. (minimuseum.com)
  • In order to grow, arthropods have to molt, shedding their whole exoskeleton all at once. (peecnature.org)
Invertebrates3
  • Invertebrates (animals lacking a backbone or spinal column) usually have eyes that are simple photoreceptors (ocelli), sensitive to the direction and intensity of light. (wordinfo.info)
  • Arthropods are the largest and most diverse group of invertebrates, with more than a million species and making up 90% of the animal species on Earth. (nittygrittyscience.com)
  • Arthropods are invertebrates with segmented bodies and jointed limbs. (alchetron.com)
Class of arthropods1
  • This class of arthropods formed a staggering amount of different species throughout the Cambrian period. (minimuseum.com)
Phylum1
  • They are found in all arthropod groups, although they may have evolved more than once within this phylum. (wikipedia.org)
Mollusks2
Cambrian17
  • A report of the eyes of Cambrian arthropods from different Lagerstatten, especially the compound and median arthropod eyes from the Chengjiang fauna of China, is given. (uni-koeln.de)
  • The eyes of trilobites (lower Cambrian to Upper Permian) are often very well preserved, and the structure and physiology of their calcite lenses, and the eye as a whole, are summarised here, based upon recent literature. (uni-koeln.de)
  • But the recovery of arthropods and other lobopods from the same Chengjiang sites shows that members of putative ancestral (lobopods) and descendent (arthropod) groups appear simultaneously in the lower Cambrian, instead of originating in a sequential fashion. (reasons.org)
  • In other words, arthropods appeared suddenly in the Cambrian explosion with fully modern eyes. (reasons.org)
  • An Armoured Cambrian Lobopodian from China with Arthropod-Like Appendages," Nature 470 (February 24, 2011): 526-30. (reasons.org)
  • Modern Optics in Exceptionally Preserved Eyes of Early Cambrian Arthropods from Australia," Nature 474 (June 2011): 631-34. (reasons.org)
  • With compound eyes sitting on stalks, a strange circular mouth, and grasping appendages at the front of its head, Anomalocaris canadensis seemed like the terror of small creatures that swarmed the Cambrian seas. (nationalgeographic.com)
  • What's more, there is no evidence to suggest that the Cambrian morphologies were fundamentally simpler in their composition than representatives of those phyla living today - for example, in having fewer cell types or more rudimentary eye structures. (evolutionnews.org)
  • Fossil evidence suggests that its diet might have consisted of trilobites, a group of extinct marine arthropods that lived in the Cambrian Period. (a-z-animals.com)
  • The evolutionary ancestry of arthropods dates back to the Cambrian period. (alchetron.com)
  • The first proto-eyes evolved among animals 600 million years ago about the time of the Cambrian explosion . (knowpia.com)
  • The genetic toolkit for eyes had its etiology before the Cambrian probably from primitive photosensitive cells. (trilobites.life)
  • Ostensibly, based on the fossil record, complex eyes initially evolved over a short span of a few million years in the interval known as the Cambrian explosion. (trilobites.life)
  • Trilobite eyes appear highly developed even in the earliest fossil record of the lower Cambrian, suggesting development long before in the Precambrian. (trilobites.life)
  • Dr Edgecombe clarifies, 'The Australian substance is exclusive between the dozens of occurrences of radiodonts all-around the entire world in the Cambrian Period, simply because it is really the only place wherever the visible surface of the eye is preserved. (thesopranosblog.com)
  • The research " Disparate compound eyes of Cambrian radiodonts reveal their developmental expansion mode and varied visible ecology" was released right now in the prestigious journal Sciences Advancements and is accessible listed here . (thesopranosblog.com)
  • This helps them to conclude that those incredible arthropod eyes are "further evidence that the Cambrian explosion involved rapid innovation. (blogspot.com)
Ommatidia11
  • Light sensory organ in ARTHROPODS consisting of a large number of ommatidia, each functioning as an independent photoreceptor unit. (wakehealth.edu)
  • On the other hand, some modes of life demand enhanced visual acuity, which in compound eyes demands a larger number of ommatidia, which in turn demands larger compound eyes. (wikipedia.org)
  • Good examples may be seen in the Mantodea and Mantispidae, in which seeing prey from particular ommatidia in both compound eyes at the same time, indicates that it is in the right position to snatch in a close-range ambush. (wikipedia.org)
  • The fly's compound eyes comprise an array of tiny sensors called "ommatidia," which means their sight is completely different from ours. (grunge.com)
  • Ommatidia - the tons of tiny lenses flies use to see - are bunched together in a globular shape to form a compound eye. (grunge.com)
  • With the hundreds or thousands of ommatidia working together in their eyes, flies don't need to turn their heads to see around them. (grunge.com)
  • All that ommatidia and slow-mo vision make a fly's eyes seem impossible to beat. (grunge.com)
  • The resolution we get through just two eyes is far higher than what two ommatidia provide for a fly. (grunge.com)
  • In order to up the quality of the image that a fly can see, the compound eye has to add more and more ommatidia. (grunge.com)
  • While trilobite fossils do not preserve the fine eye internal soft eye structures, we can infer a close similarity to modern arthropods based on survival calcite crystal lenses of the ommatidia. (trilobites.life)
  • Trilobite eyes were compound or composite arrays comprised of distinct optical units called Ommatidia . (trilobites.life)
Insect4
  • Some insect larvae, e.g., caterpillars, have a different type of simple eye known as stemmata. (wikipedia.org)
  • The insect compound eye, in spite of bearing a comparatively lower resolution than the vertebrate eye, is very efficient for local and global motion analysis over a large field of view (FOV), making it an excellent sensor for accurate and fast navigation in 3D dynamic environments. (epfl.ch)
  • [ 1 ] Forensic entomologists frequently deal with non-insect arthropods such as spiders, mites, and ticks. (medscape.com)
  • Some insect larvae , like caterpillars , have a type of simple eye ( stemmata ) which usually provides only a rough image, but (as in sawfly larvae) can possess resolving powers of 4 degrees of arc, be polarization-sensitive, and capable of increasing its absolute sensitivity at night by a factor of 1,000 or more. (knowpia.com)
TRILOBITES8
  • Anomalocaris had compound eyes made up of 16,000 lenses, allowing the animal to see in finer detail than the trilobites it supposedly fed upon. (nationalgeographic.com)
  • [7] Trilobites , now extinct, had unique compound eyes. (knowpia.com)
  • some trilobites had only one while others had thousands of lenses per eye. (knowpia.com)
  • During the Ordovician, these creatures were unique among other trilobites for their complex eyes. (minimuseum.com)
  • The earliest of the trilobites in the fossil record already had complex, compound eyes with crystal lenses (calcite). (trilobites.life)
  • These earliest trilobites already had complex, compound eyes with lenses made of crystalline calcite, pure forms of which are transparent. (trilobites.life)
  • Moreover, the lense system eyes of some trilobites were doublet structures that evolution designed to eliminate spherical aberration in a manner similar to desings by Des Cartes and Huygens in accordance with laws of optical physics. (trilobites.life)
  • Holochroal eyes are far and away the type found in all trilobite orders except Agnostida Suborder Eodiscina ( Clarkson , 1979) trilobites that had abathochroal eyes , and Phacopida Suborder Phacopina trilobites that had schizochroal compound eyes . (trilobites.life)
Prey8
  • Experts believed it could stalk its prey with its large compound eyes, swim quickly to catch up with it, and grab the prey with its strong, spiked front limbs. (a-z-animals.com)
  • Centipedes are terrestrial, predatory arthropods with specialized sensory organs and a wide range of behavioral adaptations to detect and capture prey on and in the soil. (biomedcentral.com)
  • The fly's supersized compound eyes help them catch prey and avoid our frustrated swipes at them, but another key feature gives the fly an advantage: "slow-motion" vision. (grunge.com)
  • Others have eyes with color bands and specific tints that entomologists theorize may help attract mates or better distinguish prey from their natural surroundings. (grunge.com)
  • Their vision relies on various combinations of compound eyes and pigment-pit ocelli: in most species the ocelli can only detect the direction from which light is coming, and the compound eyes are the main source of information, but the main eyes of spiders are ocelli that can form images and, in a few cases, can swivel to track prey. (alchetron.com)
  • In other organisms, particularly prey animals, eyes are located to maximise the field of view, such as in rabbits and horses , which have monocular vision . (knowpia.com)
  • The advantage of eyes was so profound that acquiring better eyes likely spawned the equivalent of an evolutionary arms race between predator and prey. (trilobites.life)
  • Dr Edgecombe provides, 'These specimens have proven us that the animals' feeding tactics earlier indicated by the appendages -- either for capturing or filtering prey - are paralleled by variances in the eyes. (thesopranosblog.com)
Schizochroal2
  • The second type is the schizochroal eye, in which the lenses are relatively much larger and each is separated from its neighbours. (uni-koeln.de)
  • In this present paper, the origin of schizochroal eyes, by paedomorphosis from holochroal precursors, is reviewed, together with subsequent evolutionary transitions in the Early Ordovician. (uni-koeln.de)
Annelids1
  • Some annelids and bivalves also have apposition eyes. (wikipedia.org)
Predatory4
Large compound eyes2
Vertebrate eye3
  • The vertebrate eye has provided inspiration for the design of conventional cameras with single-aperture optics to provide a faithful rendering of the visual world. (epfl.ch)
  • Walls describes the photoreceptors in his classic The Vertebrate Eye as greedy, 6 and greedy they are for both nutrients and oxygen (See Fig. 2 ). (arn.org)
  • The vertebrate eye is a complicated spherical structure, connected to the brain by the optic nerve. (wordinfo.info)
Animal species4
  • Estimates of the number of arthropod species vary between 1,170,000 and 5 to 10 million and account for over 80% of all known living animal species. (alchetron.com)
  • Eyes with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system. (knowpia.com)
  • [3] The last common ancestor of animals possessed the biochemical toolkit necessary for vision, and more advanced eyes have evolved in 96% of animal species in six of the ~35 [a] main phyla . (knowpia.com)
  • Over 80% of all living animal species are arthropods. (peecnature.org)
Evolutionary3
  • 2002. Molecular phylogenetic evidence for the independent evolutionary origin of an arthropod compound eye . (ucsb.edu)
  • The remarkable similarity between the camera eyes of cephalopods and vertebrates is one of the best-known examples of evolutionary convergence. (mapoflife.org)
  • Charles Darwin thought that the eye, which he called an "organ of extreme perfection," was a serious challenge to evolutionary theory - but he was mistaken. (blogspot.com)
Scorpions2
Honeybees2
  • According to Ask an Entomologist , organisms with compound eyes make up a wide population of arthropods, from mantis shrimp to honeybees. (grunge.com)
  • Furthermore, the hazardous substance is recognized as highly toxic to both birds and mammals as well as other beneficial organisms such as honeybees, arthropods and earthworms. (naturalpedia.com)
Species7
  • Most species of spiders have eight eyes, although some have fewer. (worldatlas.com)
  • The prototyped artificial compound eye possesses several characteristics similar to the eye of the fruit fly Drosophila and other arthropod species. (epfl.ch)
  • In fact, the eye is considered to be a homologous organ, simply meaning that there exists a shared ancestry (and genes and proteins) between a pair of structures, in this case eyes, in different species. (trilobites.life)
  • In this arms race, the trilobite apparently excelled, as they were probably the first animals with complex eyes, with some species having many thousands of individual lenses per eye. (trilobites.life)
  • By means of decoding the fossils and generating species reconstructions they located that radiodonts produced advanced eyes above 500 million many years back, with some specifically adapted to the dim light of deep water. (thesopranosblog.com)
  • Zoonotic infection of humans with a third species of eye worm ( T. gulosa ), which infects cattle, has recently been reported in the western United States ( 5 ). (cdc.gov)
  • These 3 species of Thelazia eye worm with zoonotic potential are morphologically and biologically distinct ( 1 , 5 , 6 ). (cdc.gov)
Lobsters2
  • We already consume many kinds of arthropods such as crabs, shrimp, and lobsters. (blogspot.com)
  • 1] 십각은 "10개의 다리"를 가지고 있다는 뜻으로, 새우와 바닷가재(lobsters)를 포함하는 절지동물(arthropods)로 분류된다. (webpot.kr)
Organs4
  • 2. The area of the eye, including lids and other accessory organs of the eye. (wordinfo.info)
  • Like their exteriors, the internal organs of arthropods are generally built of repeated segments. (alchetron.com)
  • All of these new organs are showing characteristics of an arthropod. (wikidot.com)
  • Eyes are organs of the visual system . (knowpia.com)
Calcite2
  • Clear calcite crystals formed the lenses of their eyes. (knowpia.com)
  • This specimen is a member of the Phacops genus, a type of trilobite with specialized eyes made of calcite lenses. (minimuseum.com)
Centipedes1
TRILOBITE EYES2
  • Two main kinds of trilobite eyes have been long known. (uni-koeln.de)
  • Trilobite eyes are often cited as the oldest preserved complex visual systems. (trilobites.life)
Segments2
  • The arthropod body plan consists of segments, each with a pair of appendages. (alchetron.com)
  • Arthropod segments have also fused together into functional units called tagma. (quick-advices.com)
Ocelli3
  • Most arthropods have at least one of two types of eye: lateral compound eyes, and smaller median ocelli, which are simple eyes. (wikipedia.org)
  • Ocelli can detect lower light levels, and have a faster response time, while compound eyes are better at detecting edges and are capable of forming images. (wikipedia.org)
  • The result is that the eyes occupy most of the available surface of the head, reducing the area of the frons and the vertex and crowding the ocelli, if any. (wikipedia.org)
Ticks1
Limbs3
  • The newly discovered organism, called Diania cactiformis , had armored appendages on its legs that resembled arthropod limbs. (reasons.org)
  • Arthropods are characterized by their jointed limbs and cuticle made of chitin , often mineralised with calcium carbonate . (alchetron.com)
  • Arthropod hatchlings vary from miniature adults to grubs and caterpillars that lack jointed limbs and eventually undergo a total metamorphosis to produce the adult form. (alchetron.com)
Complex5
  • [1] From more complex eyes, retinal photosensitive ganglion cells send signals along the retinohypothalamic tract to the suprachiasmatic nuclei to effect circadian adjustment and to the pretectal area to control the pupillary light reflex . (knowpia.com)
  • Complex eyes distinguish shapes and colours . (knowpia.com)
  • The eyes of mantis shrimps (here Odontodactylus scyllarus ) are considered the most complex in the whole animal kingdom. (knowpia.com)
  • Zoologist Dan-Erik Nilsson demonstrates how the complex human eye could have evolved through natural selection acting on small variations . (blogspot.com)
  • A paper reporting on "highly advanced compound eyes" which are "as advanced as those of many living forms" in early arthropods begins by informing the reader that "theory (i.e., the Nilsson paper) suggests that complex eyes can evolve very rapidly. (blogspot.com)
Spherical1
  • The eye is typically roughly spherical, filled with a transparent gel-like substance, with a focusing lens and often a muscle called the iris that controls how much light enters. (kids.net.au)
Anomalocaris3
  • Combined with other details of the animal's anatomy, such as the compound eyes, the researchers envision Anomalocaris swimming through sunny seas and plucking out comb jellies, tadpole-like animals called vetulicolians, and other soft morsels. (nationalgeographic.com)
  • Bizarrely, the eyes of Anomalocaris were positioned on stalks on the side of the animal's head. (evolutionnews.org)
  • It is possible that the eyes of Anomalocaris had even more than 16,000 lenses - the fossils are detailed, but they are not perfect. (evolutionnews.org)
Anatomy1
  • Note that not all eyes have the same anatomy as a human eye. (kids.net.au)
Similarity1
  • The degree of similarity between the active sites in arthropod and molluscan haemocyanin has been called "remarkable" and "startling", but actually suggests that wherever in the universe life employs copper for aerobic respiration it will call upon haemocyanin. (mapoflife.org)
Invertebrate animal1
  • An arthropod is an invertebrate animal with bilateral symmetry, an external skeleton, a segmented body, and jointed appendages arranged in pairs. (peecnature.org)
Appendages1
  • Arthropods also have a segmented body composed of different parts and jointed attachments called appendages used for feeding, defense, and locomotion. (nittygrittyscience.com)
Bodies1
  • Damselflies: smaller, slimmer bodies than dragonflies, folding wings, and adorable blue faces with compound eyes. (westvalleyupick.com)
Belong1
  • The respiratory and excretory systems of arthropods vary, depending as much on their environment as on the subphylum to which they belong. (alchetron.com)
Organisms1
  • Many other organisms, such as vertebrates and Cephalopoda are similarly and analogously dichoptic, which is the common state in animals that are members of the Bilateria and have functionally elaborate eyes. (wikipedia.org)
EVOLUTION5
  • Evolution is why we need to get a new flu shot every year and, notes Radford, evolution can even explain how the human eye evolved. (blogspot.com)
  • Consider the evolution of the human eye. (blogspot.com)
  • The evolution of the eye was finally understood . (blogspot.com)
  • The evolutionists, who believe evolution is a fact, first assumed the evolution of the eye in order to solve the problem of the evolution of the eye. (blogspot.com)
  • Eye evolution, they insisted, was now known to be straightforward. (blogspot.com)
Commonly1
  • Because they possessed a calcified cuticle (crystal eyes), they have left a good fossil record, and commonly the lens-bearing surfaces of their paired compound eyes are well preserved. (trilobites.life)
Median1
  • Their eyes accordingly are placed in a good position for all-round vision, plus particular concentration on the anterior median plane. (wikipedia.org)
Humans1
  • The oriental eye worm ( T. callipaeda ) is a helminth that infects a variety of domestic and wild carnivores, lagomorphs, rodents, and primates (including humans) across Eurasia ( 2 , 3 ). (cdc.gov)
Creatures1
  • Creatures such as Southern Flying Squirrels and Bobcats have eyes far more sensitive to light than ours, and they navigate the midnight woods at Hilton Pond Center as easily as we do at noon. (hiltonpond.org)
Organ2
Cuticle1
Fossil2
  • This paper presents a review of recent developments in the study of vision in fossil arthropods, beginning with a discussion of the origin of visual systems. (uni-koeln.de)
  • In fossil form, the stalked eyes are flattened, like pancakes. (evolutionnews.org)
Vertebrates2
  • In all non-vertebrate eyes, and in the pineal or dorsal eyes of primitive vertebrates, the photoreceptors point toward the light. (arn.org)
  • [1] In most vertebrates and some molluscs , the eye allows light to enter and project onto a light-sensitive layer of cells known as the retina . (knowpia.com)
Digestive tract1
  • Likewise, the harmful compound is highly toxic to the digestive tract, the eyes and the skin. (naturalpedia.com)
Structures2
  • The choroid is a thin vascular layer between the sclera and the retina that supplies blood to the retina and conducts arteries and nerves to other structures in the eye. (wordinfo.info)
  • An eye is unique in this respect because the structures necessary for image formation, although there may be several, are all typically quantitative in their nature, and can be treated as local modifications of pre-existing tissues. (blogspot.com)
Found3
  • But Paterson speculates that the eyes of a living anomalocaridid would have been bulbous, and that if non-flattened eyes were to be found, many more lenses would be discovered on the other side. (evolutionnews.org)
  • To our nostrils, the potent chemical smells slightly sweet and in some cases reminds us of wild cherries--not surprising since the millipede juice is reported to contain hydrogen cyanide, a compound also found in cherry leaves. (hiltonpond.org)
  • Thelazia nematodes are found in the conjunctival recesses of the eye ( 1 ). (cdc.gov)
Body2
  • What are the 3 main body parts that all arthropods have? (quick-advices.com)
  • This process of segment fusion, or tagmosis, usually results in an arthropod body that consists of three major sections, a head, thorax, and abdomen. (quick-advices.com)
Pairs of legs1
Lenses per eye1
  • Nature article, as many as 16,000 hexagonal lenses per eye) than most of those modern groups do. (evolutionnews.org)
Optic nerve3
Crystalline1
  • 2019 ) Trilobite compound eyes with crystalline cones and rhabdoms show mandibulate affinities. (neurotree.org)