3-481: Homerites is a genus of small, involute, globase fossil ceratitids with an eccentric outer whorl and subammonitic sutures belonging to the family Halortidae The body chamber has a slight central keel and radial dichotomous ribs that commonly terminate at spines on the ventral shoulder. Homerites , described and named by Mojsisovics in 1893 has been found in the Upper Triassic (Carnian) of California and
6-602: The Alps. The Halortidae in which it is placed is part of the superfamily Tropitaceae . This Ceratitida -related article is a stub . You can help Misplaced Pages by expanding it . Ceratitida See text Ceratitida is an order that contains almost all ammonoid cephalopod genera from the Triassic as well as ancestral forms from the Upper Permian , the exception being the phylloceratids which gave rise to
9-500: The great diversity of post-Triassic ammonites . Ceratitids overwhelmingly produced planospirally coiled discoidal shells that may be evolute with inner whorls exposed or involute with only the outer whorl showing. In a few later forms the shell became subglobular, in others, trochoidal or uncoiled. Sutures are typically ceratitic, with smooth saddles and serrate or digitized lobes. In a few the sutures are goniatitic while in others they are ammonitic. Only eight superfamilies are shown in
#203796