| 词条 | Placochelys | |||
| 释义 |
| fossil_range = Mid to Late Triassic | image= Placochelys.jpg | image_caption = Restored Placochelys placodonta skull at the Museum für Naturkunde, Berlin | taxon = Placochelys | authority = Jaekel, 1902 }} Placochelys ('flat-plate turtle") is an extinct genus of placodont reptiles erected by Otto Jaekel in 1902. Fossil recordsFossils of Placochelys dates back to the Triassic period (age range: 221.5 to 205.6 million years ago). They have been found in Germany, Austria, Hungary and Italy.[1] SpeciesThis genus includes only one species:
DescriptionPlacochelys looked remarkably similar to a sea turtle, and grew to about {{convert|90|cm|ft}} in length. It had a flat turtle-like carapace covered with knobbly plates, and a compact triangular skull. Its beaked skull had powerful muscles. It had only two pairs of palatal teeth, a large posterior pair, and a small rostral pair. The specialized broad teeth on the palate, were most likely used for crushing shellfish and hard-shelled prey. Its limbs were paddle-shaped for swimming, although, unlike modern sea turtles, they still had discernable toes, and it also had a short tail.[2]GalleryBibliography
References1. ^Paleobiology Database 2. ^{{cite book |editor=Palmer, D.|year=1999 |title= The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals|publisher= Marshall Editions|location=London|page= 71|isbn= 1-84028-152-9}} External links
3 : Placodontia|Middle Triassic reptiles of Europe|Late Triassic reptiles of Europe |
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