Ctenochasma is distinguished mainly by its numerous (over 400 in adults) long
are commonly found since they fall apart easily when they die
and large membranous wings
A bone that has been interpreted as a semilunate carpal may lie between the forearm and second metacarpal
They are cast in very dense hydrostone and finished with actual dig site matrix so that it is very difficult to tell the casts from the actual bones
Manchurochelys liaoxiensis, fossil turtle Posters Ctenochasma is distinguished mainly byManchurochelys liaoxiensis, also known as Ordosemys liaoxiensis, is described as a cryptodire (a turtle order), with a very low domed shell. The carapace, shell, had an oval outline, with the length being slightly longer than the width. Manchurochelys liaoxiensis looked like a modern turtle, but it was a primitive turtle and could not draw its head or legs into its shell. It likely fed on plants, small fish, and insects present in its environment.