Placodermi
Placodermi (from the Greek πλάξ = plate and δέρμα = skin, literally "plate-skinned") is an extinct class of armoured prehistoric fish, known from fossils, which lived from the Silurian to the end of the Devonian Period. Their head and thorax were covered by articulated armoured plates and the rest of the body was scaled or naked, depending on the species. Placoderms were among the first jawed fish; their jaws likely evolved from the first of their gill arches. Placoderms are paraphyletic, and comprise several distinct outgroups or sister taxa to all living jawed vertebrates, which originated among their ranks. This is illustrated by a 419-million-year-old fossil, Entelognathus, from China, which is the only known placoderm with a type of bony jaw like that found in modern bony fishes. This
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Placodermi
Placodermi (from the Greek πλάξ = plate and δέρμα = skin, literally "plate-skinned") is an extinct class of armoured prehistoric fish, known from fossils, which lived from the Silurian to the end of the Devonian Period. Their head and thorax were covered by articulated armoured plates and the rest of the body was scaled or naked, depending on the species. Placoderms were among the first jawed fish; their jaws likely evolved from the first of their gill arches. Placoderms are paraphyletic, and comprise several distinct outgroups or sister taxa to all living jawed vertebrates, which originated among their ranks. This is illustrated by a 419-million-year-old fossil, Entelognathus, from China, which is the only known placoderm with a type of bony jaw like that found in modern bony fishes. This
has abstract
Die Placodermi oder Placoderma ...... h in Rheinland-Pfalz zu sehen.
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I Placodermi sono una classe c ...... e a quello dei moderni squali.
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Los placodermos (Placodermi, d ...... tes a géneros monoespecíficos.
@es
Os placodermos (classe Placode ...... peixes ósseos (Osteichthyes).
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Placodermi (from the Greek πλά ...... rg event 360 million years ago
@en
Placodermi PlacodermiFichier:D ...... 40 et -358 millions d'années).
@fr
Placodermi of placodermen (van ...... n relatief nauw verwant waren.
@nl
Ryby pancerne, tarczowce, plak ...... kieletowe i kostnoszkieletowe.
@pl
Плакоде́рмы или пластинокожие ...... кожей, а не роговыми щитками.
@ru
لوحيات الأدمة أو ذوات الصفائح ...... ًا بحلول نهاية العصر الديفوني.
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Wikipage page ID
Wikipage revision ID
742,665,581
authority
fossil range
Late Llandovery – Late Devonia ...... brates represent extant forms)
image caption
Fossil of Bothriolepis panderi showing its caliper-like pectoral fins
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name
subdivision
?Pseudopetalichthyida †
?Stensioellida †
Acanthothoraci †
Brindabellaspida †
Petalichthyida †
Phyllolepida †
Ptyctodontida †
subdivision ranks
subject
hypernym
type
comment
Die Placodermi oder Placoderma ...... besiedelten sie auch das Meer.
@de
I Placodermi sono una classe c ...... e a quello dei moderni squali.
@it
Los placodermos (Placodermi, d ...... hasta el Carbonífero inferior.
@es
Os placodermos (classe Placode ...... placodermos foi Louis Agassiz.
@pt
Placodermi (from the Greek πλά ...... nd in modern bony fishes. This
@en
Placodermi PlacodermiFichier:D ...... 40 et -358 millions d'années).
@fr
Placodermi of placodermen (van ...... oen jaar geleden) uitstierven.
@nl
Ryby pancerne, tarczowce, plak ...... y czaszkę z pancerzem tułowia.
@pl
Плакоде́рмы или пластинокожие ...... кожей, а не роговыми щитками.
@ru
لوحيات الأدمة أو ذوات الصفائح ...... امًا بحلول نهاية العصر الديفون
@ar
label
Placodermes
@fr
Placodermi
@de
Placodermi
@en
Placodermi
@es
Placodermi
@it
Placodermi
@nl
Placodermo
@pt
Ryby pancerne
@pl
Панцирные рыбы
@ru
لوحيات الأدمة
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