Proganochelys is a genus of extinct, primitive stem-turtle. Proganochelys was named by Georg Baur in 1887 as the oldest turtle in existence at the time...

laterosphenoid bone, typical of Archosauriformes, in the stem-turtle Proganochelys. It may serve as a synapomorphy for this proposed clade. The cladogram...

and Middle Triassic records in the form of fossil tracks Skeleton of Proganochelys quenstedti, American Museum of Natural History Scientific classification...

†Proganochelys Testudines...

The development of a shell reached completion with the Late Triassic Proganochelys, with its fully developed carapace and plastron. Adaptations that led...

archosaurs and a few other archosauromorphs, as well as the stem-turtle Proganochelys. The singular basisphenoid forms the front lower part of the braincase...

large body masses. Among other reptiles, the earliest turtles, like Proganochelys and Proterochersis, appeared during the Norian Age (Stage) of the Late...

†Proganochelys Testudines...

genus Proganochelys), the teeth have already been lost, and a keratin beak is suggested by the mandibles. Important differences between Proganochelys and...

range: 260–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Possible Capitanian records. Proganochelys quenstedti Scientific classification Domain: Eukaryota Kingdom: Animalia...