Pessopteryx


Pessopteryx is an extinct genus of ichthyosaur from the Early Triassic of Svalbard, Norway. The genus was named in 1910. It was once known as Omphalosaurus nisseri, Merriamosaurus and Rotundopteryx. The genus Pessopteryx was transferred to the genus Grippia in 1929 but Pessopteryx was later re-separated from Grippia.