Notocaiman is an extinct genus of alligatorid crocodylian. A fragmentary and poorly preserved left dentary found from Argentina that presumably dates back to the Paleocene epoch is all that is known from the genus. It may be a junior synonym of Eocaiman. Similarities between the remains of Notocaiman and comparable material from the alligatoroid Listrognathosuchus have been observed but have not been taken as evidence for synonymy. The type species N. stromeri was named in 1937. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Animal