Ichthyosauria indet. (cf. Mixosauridae) Middle Triassic, Lower Gogolin Beds, Upper Silesia, Poland A vertebral centrum of a small marine reptile, likely a member of the Mixosauridae—early ichthyosaurs known from the Triassic. The centrum is short, disc-shaped, subhexagonal in outline, and tapering upward. The articular surfaces of the centrum are strongly amphicoelous. Dorsally, the floor of…