Ammonitoceras is an extinct genus of cephalopod belonging to the ammonite subclass that lived during the latter part of the Early Cretaceous in what is now Europe and the transcaspian region. Ammonitoceras was named by Dumas, 1876, the type-species: Ammonitoceras ucetiae. Although the description doesn't mention a hook, as in Ancyloceras or Acrioceras, Ammonitoceras is included in the Ancyloceratidae. However neither do Australiceras or Tropaeum, which are also included.
Arcestes is a genus of extinct ceratitid ammonites found in Triassic-aged marine strata.
Androgynoceras is an extinct genus of cephalopod belonging to the ammonite subclass. The Green Ammonite Beds of the Dorset Coast are named after Androgynoceras lataecosta which has chambers filled with green calcite.
Balticeras is an involute, discoidal Upper Jurassic (Oxfordian) ammonite found in England, Germany, and Switzerland, belonging to the Perisphinctidae. The shell is strongly embracing, tending to be oxyconic. Sides are gently curved, converging on a narrow to sharp ventral rim.
Anisoceratidae is an extinct family of heteromorph ammonites which belong to the Ancyloceratina superfamily Turrilitoidea. Members of the family range is from the lower Albian to the upper Turonian. The family is possibly derived from a member of the Hamitidae.
Normannites is a strongly ribbed evolute Middle Jurassic genus of ammonite included in the stephanoceratoid family Stephanoceratidae.
Exiteloceras is an ammonite genus from the Late Cretaceous.
Neoptychites is an extinct ammonoid cephalopod genus from the Turonian stage of the Upper Cretaceous, with a worldwide distribution.
Eoderoceras is an evolute, round whorled ammonite from the Lower Jurassic with an outer row of distinct spines, and in some, an inner row of tubercles, on either side; ribs only on the inner whorls.
Calliphylloceras is an ammonite belonging to the Phylloceratidae.
Calycoceras is an extinct genus of cephalopods belonging to the subclass Ammonoidea and family Acanthoceratidae that lived during the Cenomanian stage of the Late Cretaceous, 100-94 Mya. Their shells had ornate ribs.
Tragophylloceras is an extinct genus of cephalopod belonging to the Ammonite subclass.
Neophylloceras is an extinct genus of cephalopod belonging to the Ammonite subclass.
Metoioceras is an extinct genus of cephalopod belonging to the Ammonite subclass which lived during the Cenomanian.
Trachyceras is a genus belonging to the extinct subclass of cephalopods known as ammonites. Specifically it belongs in the order Ceratitida. They are distributed in Afghanistan, Bosnia and Herzegovina, Canada, China, Germany, Hungary, India, Indonesia, Italy, the Russian Federation, Slovenia, United States.
Boreotrachyceras is an extinct genus of ammonite cephalopod, belonging to the order Ceratitida.
Brotheotrachyceras is a genus of ammonite cephalopod belonging to the order Ceratitida. It was living during the Carnian age of the Late Triassic Epoch.
Hannaoceras is a genus belonging to the extinct subclass of cephalopods known as ammonites. Specifically it belongs in the order Ceratitida.
Neoprotrachyceras is a genus belonging to the extinct subclass of cephalopods known as ammonites. Specifically it belongs in the order Ceratitida.
Okhototrachyceras is a genus belonging to the extinct subclass of cephalopods known as ammonites. Specifically it belongs in the order Ceratitida.
