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#1Placodermi - Wikipedia
Placoderms were among the first jawed fish; their jaws likely evolved from the first of their gill arches. Placoderms are thought to be paraphyletic, consisting ...
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#2placoderm | fossil fish - Encyclopedia Britannica
placoderm, any member of an extinct group (Placodermi) of primitive jawed fishes known only from fossil remains. Placoderms existed throughout the Devonian ...
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#3Placoderms, Pre-Historic Life, Biology, SUNY Orange
Placoderms were the dominant fish of marine and freshwater environments during the Devonian Period but became extinct at the end of the Devonian. For sixty ...
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#4(PDF) Placoderms (Armored Fish): Dominant Vertebrates of ...
placoderm fishes. ... of a modern shark. ... doskeleton, but by the Middle-to-Late Devonian internal ossification was much reduced or lost. ... morphology of these ...
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#6What are Placoderms?
Early reconstructions depicted them as jawless fish but it is now known that they did in fact have jaws and are quite probably related to sharks. Placoderms ...
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#7Palaeos Vertebrates : Placodermi: Overview
Placoderms evolved into a variety of ecomorphs (body types), including torpedo-shaped swimmers, flattened bottom-dwellers, and armoured box-like types. They ...
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#8Placoderm - New World Encyclopedia
The placoderms (class Placodermi) are armored prehistoric fishes known from fossils dating from the late Silurian to the end of the Devonian period.
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#9Placoderm Definition & Meaning | Dictionary.com
Placoderm definition, any of various extinct jawed fishes of the class Placodermi, dominant in seas and rivers during the Devonian Period and characterized ...
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#10Placoderms - Miguasha
In general, placoderms are easily distinguished by their heavy armour made of large bony plates covering their head and thorax, and sometimes even their ...
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#11Dominant Vertebrates of the Devonian Period - Annual Reviews
Placoderms, the most diverse group of Devonian fishes, were globally distributed in all habitable freshwater and marine environments, ...
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#123.2 Placoderms - Learning to Bite | Coursera
Video created by University of Alberta for the course "Paleontology: Early Vertebrate Evolution". The Ordovician, Silurian and Devonian Periods were times ...
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#13Did Placoderm Fish Have Teeth? - jstor
由 GC Young 著作 · 2003 · 被引用 39 次 — teeth of sharks, which also inhabited Late Devonian oceans? The traditional view has been that placoderms, as basal gna- thostomes, never evolved the capacity ...
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#14Placodermi | Fossil Wiki
Placoderms were among the first jawed fishes; their jaws likely evolved from the first of their gill arches. A 380 million year old fossil of one species ...
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#15New findings in a 400 million-year-old Devonian ...
As early gnathostomes (jawed vertebrates), placoderms were traditionally viewed as a side branch to the main trajectory of jaw evolution from ...
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#16“Lungs” in Placoderms, a persistent palaeobiological myth ...
由 D Goujet 著作 · 2011 · 被引用 10 次 — The presence of an aerial breathing organ in Placoderms is noticed in many textbooks on the history of breathing in Vertebrates.
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#17VI.—Features of Placoderm Diversification and the Evolution ...
VI.—Features of Placoderm Diversification and the Evolution of the Arthrodire Feeding Mechanism*. - Volume 68 Issue 6.
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#18placoderms - 盾皮魚類 - 國家教育研究院雙語詞彙
盾皮魚類. placoderms. 中國大陸譯名: 盾皮鱼类. 以placoderms 進行詞彙精確檢索結果. 出處/學術領域, 英文詞彙, 中文詞彙. 學術名詞 兩岸對照名詞-地質
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#19Our ideas about vertebrate evolution challenged by a new ...
The placoderms were a diverse group of ancient armoured fishes and it's widely believed that they are ancestral to virtually all vertebrates ...
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#20Placoderm Morphology | SpringerLink
Armoured fish Extinct jawed fish in which the head and thorax were covered by bony plates. Placoderms were a diverse class of armoured ...
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#21Placoderm Fossils - Ohio History Central
Placoderm Fossils. Placoderms were armored fishes and among the early jawed fishes. They were a diverse group and some reached very large sizes, perhaps nearly ...
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#22Dominant Vertebrates of the Devonian Period - NASA/ADS
Placoderms, the most diverse group of Devonian fishes, were globally distributed in all habitable freshwater and marine environments, like teleost fishes in ...
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#23Placoderms and the evolutionary origin of teeth - NCBI
The extinct Devonian placoderms (armoured jawed fishes) [1,2] are central to the question of tooth origins, because some have denticulate 'toothplates' ...
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#24Placoderm Definition & Meaning - Merriam-Webster
The meaning of PLACODERM is any of a class (Placodermi) of extinct chiefly Devonian fishes with an armor of bony plates and primitive jaw structures.
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#25A large Middle Devonian eubrachythoracid 'placoderm ...
For the understanding of the evolution of jawed vertebrates and jaws and teeth, 'placoderms' are crucial as they exhibit an impressive ...
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#26placoderm - Wiktionary
placoderm (plural placoderms). (paleontology) A member of an extinct class (Placodermi) of jawed fish with armored heads and thoraces; the group lived ...
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#27More about Placoderms - Devonian Times
Placoderms (=plate skin) are armored by their extensive dermal skeleton. These dermal bones (or plates) form head and thoracic shields that are ...
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#28Reappraisal of the Silurian placoderm Silurolepis and ...
Silurolepis platydorsalis, a Silurian jawed vertebrate originally identified as an antiarch, is here redescribed as a maxillate placoderm ...
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#3017 Placoderms: Everyone Should Know About (Prehistoric ...
Wikipedia Illustrator Stanton F. Fink presents his reconstructions of extinct species of placoderm fishes, both famous and obscure, for the coloring pleasure of ...
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#31Endocranial morphology of the petalichthyid placoderm ...
Petalichthyid and “acanthothoracid” placoderms have taken pivotal positions in the debate on placoderm — and, by extension, jawed vertebrate — relationships ...
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#32definition of Placoderms by The Free Dictionary
Define Placoderms. Placoderms synonyms, Placoderms pronunciation, Placoderms translation, English dictionary definition of Placoderms. n.
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#33Dunkleosteus - Your Guide To The Giant Armored Placoderm
At around 8 meters, or 26 feet in length, Dunkleosteus terrelli was the largest Placoderm to ever exist. Like all Placoderms, D. terrelli had thick, tank like ...
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#34Placoderm Meaning | Best 3 Definitions of ... - YourDictionary
Any of various extinct jawed fishes of the group Placodermi of the Silurian and Devonian Periods, having bony plates of armor covering the head and thorax.
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#35Devonian antiarch placoderms from Belgium revisited - Acta ...
Devonian antiarch placoderms from Belgium revisited. Sébastien Olive. Acta Palaeontologica Polonica 60 (3), 2015: 711-731 doi:http://dx.doi.org/10.4202/app.
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#36Bayesian Morphological Clock Methods Resurrect Placoderm ...
Key to the early evolution of jawed vertebrates is the placoderms, a group of armoured fishes that dominated vertebrate faunas until their extinction at the end ...
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#37Major Events in Early Vertebrate Evolution - 第 292 頁 - Google 圖書結果
17.3.2 Dermal pectoral girdle (Figure 17.3) Whether the dermal bone pattern of osteichthyans can be extended to placoderms has been in debate, ...
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#38Pelvic and reproductive structures in ... - Wiley Online Library
The most primitive jawed vertebrates are the placoderms, fossil taxa ranging in age from the early Silurian (middle Telychian) to the end of the ...
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#39Placoderms and basal gnathostome apomorphies - Taylor ...
Among early gnathostomes the Placodermi are presently recognised as the most successful and diverse group during the Devonian period.
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#40Dataset of antiarch placoderms (the most basal jawed ... - ESSD
Antiarch placoderms, the most basal jawed vertebrates, have the potential to enlighten the origin of the last common ancestor of jawed vertebrates.
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#41New Early Devonian (late Emsian) placoderms from Belarus
Four placoderm fishes are described from the Lepel Beds of the Vitebsk Regional Stage of the Lower Devonian (upper Emsian) of Belarus.
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#42placoderms - Encyclopedia of Life
Placodermi (Placoderms) is a class of vertebrates. This class has been around since the ludlow epoch. They are carnivores.
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#43placoderms - 英语_读音_用法_例句 - 海词词典
placoderms 的英文翻译是什么意思，词典释义与在线翻译：. 英英释义. 名词placoderm: fish-like vertebrate with bony plates on head and ...
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#44Placoderms and Acanthodians - The Paleontology Portal
They had pelvic and pectoral fins modified into long spines, bony plates covering the head, and small scales covering their bodies. Placoderms were restricted ...
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#45Science Olympiad Placoderms - The Virtual Petrified Wood ...
Placoderms (class Placodermi "tablet or plate skin") were heavily armored jawed fish that range from the Silurian to the Devonian. Armored Jawed Fish
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#46Class Placodermi - The Virtual Fossil Museum
The Placoderms were some of the earliest fish having jaws that probably evolved from the first of their gill arches. Placoderms had bony plates in their jaws ...
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#47Carr | Acta Geologica Polonica
A preliminary note of egg-case oviparity in a Devonian placoderm fish. ... Among placoderms, behaviors of a pelagic life style with obligate nesting sites, ...
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#48Placodermi - Wikiwand
Paleontologists and placoderm specialists suspect that the scarcity of placoderms in the Silurian fossil record is due to placoderms' living in environments ...
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#49Copulation in antiarch placoderms and the origin of ...
Male copulatory claspers are present in certain placoderms, fossil jawed vertebrates retrieved as a paraphyletic segment of the gnathostome stem group in ...
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#50Precursor Placoderm - Item - World of Warcraft - Wowhead
"This enigmatic fish only surfaces occasionally to feed in groups, making it rare to catch outside of these circumstances." Crafting Reagent. Max Stack: 200.
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#51Page: Placoderms - PALAEONTOLOGY[online]
Placoderms published on PALAEONTOLOGY[online].... A group of heavily armoured fishes that lived during the Devonian period. They likely form a paraphyletic ...
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#52Comments on distribution and taphonomy of Devonian ...
The stratigraphic distribu- t ion of all of the Upper Devonian placoderms from the. Holy Cross Mountains are presented in Fig. 4. Taphonomy of placoderm fossils.
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#53The Silurian: Placoderms - Furman University
Placoderms were “armored” fish that evolved during the early Silurian and flourished during the Devonian. They were one of the first groups of jawed fishes, ...
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#54A new look at Radotina and Holopetalichthys - PLOS
The taxonomy of Early Devonian placoderm material from the Lochkovian and Pragian of the Prague basin, previously attributed to the genera ...
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#55The phylogeny of antiarch placoderms - UMD Geology
Placoderms are one of the three major groups of jawed vertebrates, the others being chondrichthys, sharks and other cartilaginous fish, and osteichthys,.
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#56Neurocranial anatomy of three unusual placoderms revealed ...
Placoderms are the only known stem-group jawed vertebrates with jaws and their phylogenetic relationships have become central to the question of how ...
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#57Placoderms (Class Placodermi) - iNaturalist Canada
Placoderms were among the first jawed fish; their jaws likely evolved from the first of their gill... (Source: Wikipedia, '' ...
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#58A large Middle Devonian eubrachythoracid 'placoderm ...
For the understanding of the evolution of jawed vertebrates and jaws and teeth, 'placoderms' are crucial as they exhibit an impressive morphological ...
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#59Pelvic and reproductive structures in placoderms (stem ...
Pelvic and reproductive structures in placoderms (stem gnathostomes). Access Status. Fulltext not available. Authors. Trinajstic, Katherine.
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#60Jaws emerge: Insight from placoderms to resolve the ...
The programme of research will be focussed on the placoderm Bothriolepis. X-ray Tomographic Microscopy (XTM) will be used to obtain 3D digital ...
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#61Placoderm Stock Photos and Images - Alamy
Find the perfect placoderm stock photo. Huge collection, amazing choice, 100+ million high quality, affordable RF and RM images. No need to register, ...
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#62Prehistoric armoured fish had the world's first abs | New Scientist
Using fragments from three placoderm fossils, Ahlberg was able to piece ... The big surprise was in the placoderms' abdominal muscles.
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#63Placoderms - Austhrutime
Placoderms are armour-plated gnathostomes. The Placodermi includes 6 clades (Denison, 1978; Goujet & Young, 1995). In phylogenetic sequence from ...
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#64A Silurian maxillate placoderm illuminates jaw evolution
now describe a second Silurian placoderm that more securely bridges the jawless toothlike plates of placoderms to the development of the jawed condition that ...
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#65Reconstruction of the jaws and braincase in the Devonian ...
... of the jaws and braincase in the Devonian placoderm fish Bothriolepis ... plate of antiarchs is homologized with the suborbital in other placoderms.
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#66Fossil chondrichthyan and placoderm remains from the Middle ...
First thought by Hills to be Late Devonian, later studies on the placoderms suggested the deposit to be older, probably Givetian in age.
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#67Scientists Discover Primitive Teeth in the Jaws of Placoderms
The Origins of Teeth – Research Suggests some Placoderms Developed Teeth. The First Jaws with Teeth – Scientists Identify The Toothy Grin of the ...
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#68Copulation in antiarch placoderms and the origin - ProQuest
Copulation in antiarch placoderms and the origin of gnathostome internal fertilization. Long, John A; Mark-Kurik, Elga; Johanson, Zerina; Lee, Michael S Y; ...
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#69New cranial material of the acanthothoracid placoderm ... - DIVA
Placoderms (armoured fishes) were the first gnathostomes. (jawed vertebrates). They appeared during the Early. Silurian, diversified through the ...
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#70When fish wore armour: enter the Placoderms - Collins ...
Armour was all the fashion of the day in the Silurian and Devonian periods and is particularly associated with a group of heavily armoured fish, the Placoderms.
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#71First teeth found on an ancient armored fish | Earth | EarthSky
Placoderms are an extinct class of fierce-looking armoured fish that evolved in the late Silurian, about 430 million years ago. They continued ...
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#72Placodermi Facts for Kids
The relationship between the placoderm and other jawed fish is still not clear. Most placoderms were benthic predators, near the bottom of the ...
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#73PLACODERM | Meaning & Definition for UK English - Lexico ...
UK English definition of PLACODERM along with additional meanings, ... of Devonian arthrodire placoderms, Mesozoic pliosaurs and Cenozoic toothed whales.'.
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#74Meteors & Placoderms, Lectures organised by Belgian ...
23 on VUB campus, room D.2.01, by Sebastien Olive (Royal Belgian Institute of Natural Sciences) on Placoderms (fishes) and by Philippe Claeys on ...
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#75Placoderm Images, Stock Photos & Vectors | Shutterstock
Find Placoderm stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection.
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#76Placoderm definition and meaning | Collins English Dictionary
Placoderm definition: any extinct bony-plated fishlike vertebrate of the class Placodermi, of Silurian to... | Meaning, pronunciation, translations and ...
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#77Devonian Fish's Inner Ear Sheds Light on Earliest Evolution of ...
Paleontologists have found that Brindabellaspis stensioi, a species of long-beaked placoderm fish that lived 400 million years ago (Early ...
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#78Placoderms – UK Fossil Collecting
Achanarras Quarry once constantly yielded complete Middle Devonian fish from the Old Red Sandstone. However, it has been disused for many ...
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#79Abstract - CSIRO PUBLISHING | Australian Journal of Zoology
The 'buchanosteid' placoderms are best known from the Early Devonian of ... Groenlandaspidid placoderm fishes from the Late Devonian of North America.
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#80Placoderms: Knights of the Aquatic Table - Darwin's Door
Most placoderms are interpreted as carnivores that evolved powerful jaws in order to capture and crush live prey rapidly and prior to ingestion.
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#81If the placoderm was not our ancestor, what was? - LabOnline
... have questioned the traditionally held belief that we vertebrates descended from the archaic armoured jawed fish known as placoderms.
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#82What if Placoderms survived the the competition of bony fish ...
There was only competition and Placoderms didn't survive because of their slowness which made them hard to get out of the extinction they were ...
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#83Placodermi
The placoderms were the earliest vertebrates to have true jaws, and, therefore, were the first true gnathostomes. They flourished from the ...
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#84Ancient armored fish revises early history of jaws - Science ...
Placoderm fossil had skull bones like those of many modern vertebrates. placoderm illustration. FISHFACE A 423-million-year-old armored fish ...
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#8517 Placoderms: Everyone Should Know About - Seminary Co ...
Wikipedia Illustrator Stanton F. Fink presents his reconstructions of extinct species of placoderm fishes, both famous and obscure, ...
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#86Placoderms Facts - Other Prehistoric Animals - Dinosaurs
Placoderms are a group of extinct armored fish. They are noted for their heavily armored head and thorax, which are covered with armor plates (whereas the ...
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#87The Visual System in Vertebrates - 第 9 頁 - Google 圖書結果
Among the latter were the acanthodians, placoderms, chondrichthyans, and all the major subdivisions of the osteichthyans (Table 1).
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#88The fossil record of placoderms is found in the era : - Doubtnut
Placoderms were the earlist jawed verterates appeared during the upper Silurian and lower Devonian period.
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#89Explore the Best Placoderms Art | DeviantArt
Want to discover art related to placoderms? Check out amazing placoderms artwork on DeviantArt. Get inspired by our community of talented artists.
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#90placoderms: meaning - WordSense Dictionary
placoderm : placoderm (English) Noun placoderm (pl. placoderms) A member of an extinct group of fish with armored heads; the group lived during the Silurian ...
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#91BIOLOGY OF CHORDATES - 第 83 頁 - Google 圖書結果
Placoderms are an extinct class of armoured fishes. They were the first vertebrates to have jaws. They are paraphyletic, and comprise several distinct out ...
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#92Clarias, the walking catfish, is a living placoderm - The ...
The placoderm, Entelognathus, is widely considered the outgroup to the crossopterygians, the stem tetrapods. Compare the skull bones to those of ...
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#93Placoderm Fish | Placoderm Size | Placoderm Fossil 2022
The placoderms were characterized by their heavy armor plating consisting of large bony plates called osteoderms which grew over their head, back, and belly, ...
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#94Prehistoric Creatures - Pinterest
Aug 24, 2020 - Bothriolepis, a Devonian placoderm, an armored fish with jaws. Placoderms were among the earliest creatures with jaws (which allowed fish to ...
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#95Are there any living placoderms? - JanetPanic.com
placoderm, any member of an extinct group (Placodermi) of primitive jawed fishes known only from fossil remains.
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#96Are placoderms bony fish? - Movie Cultists
Placoderms were among the first jawed fish; their jaws likely evolved from the ... placoderm with a type of bony jaw like that found in modern bony fishes.
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#97Fishes of the World - Google 圖書結果
A few Silurian records are known with greatest abundance in the Devonian; there is no clear evidence of placoderms surviving a major extinction event at the ...
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