Protostega ('first roof') is an extinct genus of sea turtle containing a single species, Protostega gigas. Its fossil remains have been found in the Smoky...

impressions from the large lamnid sharks of the time. Two specimens of Protostega gigas have been discovered to have tooth marks from large sharks. In addition...

contained A. marshii and A. copei, though these have been reassigned to Protostega and Kansastega, respectively. The genus was named in 1895 by American...

including a display of small fossils (including Champsosaurus, Dromaeosaurus, Protostega, among others.), modern animals that can be traced back to the dinosaur...

Niobrara Formation of Kansas. It was originally named as a species of Protostega, then was moved to its own genus Microstega. However, that genus name...

†Desmatochelys †Iserosaurus †Notochelone †Ocepechelon †Pneumatoarthrus †Protostega †Rhinochelys †Santanachelys †Terlinguachelys   †Adocus †Argillochelys...

†Desmatochelys †Iserosaurus †Notochelone †Ocepechelon †Pneumatoarthrus †Protostega †Rhinochelys †Santanachelys †Terlinguachelys   †Adocus †Argillochelys...

†Desmatochelys †Iserosaurus †Notochelone †Ocepechelon †Pneumatoarthrus †Protostega †Rhinochelys †Santanachelys †Terlinguachelys   †Adocus †Argillochelys...

Gryposuchus Aktiogavialis Chelonioidea Allopleuron Archelon Pneumatoarthrus Protostega Araripemydidae Araripemys Bothremydidae Agkistrognathus Anshunsaurus Askeptosaurus...

†Desmatochelys †Iserosaurus †Notochelone †Ocepechelon †Pneumatoarthrus †Protostega †Rhinochelys †Santanachelys †Terlinguachelys   †Adocus †Argillochelys...