Question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Cassinoceras - Cassinoceras (Cassin Horn) is of the nautiloid genus belonging to the endocerid family Piloceratidae that comes from the late Early Ordovician of eastern North America and adjacent territories.(Teichert 1964)Cassinoceras is characterized by short laterally compressed rapidly expanding shells in which the upper dorsal surface has a convex curvature and diverges strongly from the essentially straight lower ventral surface.
Answer:
Animal