👉 Palaeichthyic is a scientific term that refers to marine animals belonging to a group of extinct and extinct marine reptiles, including the ichthyosaurs. It was first described by the French paleontologist Jean-Baptiste Charcot in 1837. The palaeichthyans are classified into two main groups: the ichthyosaurs and the ichthyopods. The ichthyosaurs were a group of marine reptiles that lived during the Paleocene (about