Prehistoric Models: Placoderms

Placoderms are a class of armored fish that first appeared in the fossil record at the end of the Silurian period about 430 million years ago. But a majority of Placiderms lived in the Devonian period and were extinct by the beggining of the Carboniferous Period.

Kingdom: Animalia – Phylum: Chordata – Subphylum: Vertebrata – Infraphylum: Gnathostomata – Class: Placodermi

(Placoderms “armored fish”)

Late Silurian to Late Devonian

Genus: Groenlandaspis “Greenland shield”
Pronounced: Green-land-as-piss
Named By: Heintz‭ ‬-‭ ‬1932
Species: G. mirabilis (type). G. antarctica, G. disjectus, G. pennsylvanica, G. potyi, G. riniensis, G. seni, G. theroni, G. thorezi
Classification: Class: ‬Placodermi, – ‬Order: Arthrodira,‭ – Family: Groenlandaspidae
Locations: Global
Time period: Late or Upper Devonian
Size: Up to 9‭ ‬meters long
Diet: Carnivore
Genus: Dunkleosteus ‭”‬Dunkle’s bone‭”‬
Pronounced: Dun-kel-os-tee-us
Named By: Lehman‭ ‬-‭ ‬1956
Species: D.‭ ‬terrelli‭ (‬type‭)‬,‭ ‬D.‭ ‬amblydoratus,‭ ‬D.‭ ‬marsaisi,‭ ‬D.‭ ‬raveri
Classification: Class: ‬Placodermi, – ‬Order: Arthrodira,‭ – Family: Dunkleosteidae
Locations: Canada.‭ ‬USA.‭ ‬Europe.‭ ‬Morocco
Time period: Late Devonian (Frasnian to Famennian)
Size: Up to 9‭ ‬meters long
Diet: Carnivore/Piscivore
Genus: Dunkleosteus ‭”‬Dunkle’s bone‭”‬
Pronounced: Dun-kel-os-tee-us
Named By: Lehman‭ ‬-‭ ‬1956
Species: D.‭ ‬terrelli‭ (‬type‭)‬,‭ ‬D.‭ ‬amblydoratus,‭ ‬D.‭ ‬marsaisi,‭ ‬D.‭ ‬raveri
Classification: Class: ‬Placodermi, – ‬Order: Arthrodira,‭ – Family: Dunkleosteidae
Locations: Canada.‭ ‬USA.‭ ‬Europe.‭ ‬Morocco
Time period: Late Devonian (Frasnian to Famennian)
Size: Up to 9‭ ‬meters long
Diet: Carnivore/Piscivore

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