Aulacosphinctes -  Aulacosphinctes is an extinct ammonoid cephalopod that lived during the Late Jurassic and had a wide spread distribution.The shell is compressed covered by strong distinct widely bifurcating ribs some simple none with tubercles; the venter marked by a deep and persistent groove; lappets rather long. Based on the style of ribbing Aulacosphinctes is included in the Himalayitinae but could be placed in the Beriasellinae. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Animal