Utatsusaurus hataii is the earliest-known ichthyopterygian which lived in the Early Triassic period. It was nearly 2.5–3 metres long with a slender body. The first specimen was found in Utatsu-cho, Mi
Fossil of Utatsusaurus hataii. Exhibit in the National Museum of Nature and Science, Tokyo.
Parvinatator is an extinct genus of small ichthyopterygian marine reptile that lived during the Early to Middle Triassic. Its fossils have been found in British Columbia, Canada.
Grippia longirostris from the early Triassic is a close relative.
Utatsusaurus, another close relative.