Pseudomegachasma: New Genus of Prehistoric, Planktivorous Sharks Discovered

Paleontologist Prof. Kenshu Shimada of DePaul University and his colleagues have discovered a new genus of extinct planktivorous (plankton-eating) sharks. The new lineage, named Pseudomegachasma, is represented by two extinct species – Pseudomegachasma casei (formerly known as Eorhincodon casei) from RF’s Belgorod and Volgograd provinces and P. comanchensis (formerly Megachasma comanchensis) from the U.S. These [...] —> Read More