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.
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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.
==Species== C. algeriense Kennedy & Gale, 2017 C. annulatum Collignon, 1964 C. asiaticum (Jimbo, 1894) C. a. asiaticum (Jimbo, 1894) C. a. spinosum (Kossmat, 1897) C. besairieri Collignon, 1937 C. boreale Kennedy, Cobban & Landman, 1996 C. dromense (Thomel, 1972) C. cenomanense (d’Archiac, 1846) C. navicularis (Mantell, 1822) C. orientale Matsumoto, Saito & Fukada C. paucinodatum (Crick) C. tarrantense
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