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Class: CEPHALOPODA
--- Taxon Tree: ORTHOCERATOIDEA [Subclass]-ORTHOCERIDA [Order]
------ Family: ORTHOCERIDA (unassigned) (Sea) (FOSSIL)
DB counters=65, Genus=46, Subgenus=0, Species=17, Subspecies=0, Synonyms=1, Images=3
DB counters include Fossil taxa: Species=17, Subspecies=0
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ambigena, Vericeras ambigena (Barrande, 1874) † (FOSSIL)
attavus, Slemmestadoceras attavus (Brøgger, 1882) † (FOSSIL)
bestia, Cryptocycloceras bestia (Shimansky, 1968) † (FOSSIL)
calamoides, Murchisoniceras calamoides (Barrande, 1867) † (FOSSIL)
comprendus, Rhabdites comprendus Zhuravleva, 1978 † (FOSSIL)
dargazense, Geisonocerina dargazense Ghavidel-Syooki & al., 2015 † (FOSSIL)
delicatulum, Protobactrites delicatulum Troedsson, 1932 † (FOSSIL)
elongatocinctum, Geisonocerina elongatocinctum Portlock, 1843 † - syn of: Isorthoceras albersi (Miller & Faber, 1894) † (FOSSIL)
gregale, Acrosphaerorthoceras gregale Ristedt, 1968 † (FOSSIL)
latisiphonatus, Haruspex latisiphonatus Shimansky, 1968 † (FOSSIL)
moniliforme, Loxoceras moniliforme Hall † (FOSSIL)
murchlsonl, Murchisoniceras murchlsonl (Barrande, 1868) † (FOSSIL)
obsolescens, Murchisoniceras obsolescens (Barrande, 1868) † (FOSSIL)
sichuanense, Jangziceras sichuanense Lai, 1964 † (FOSSIL)
styloideum, Protobactrites styloideum (Barrande, 1866) † (FOSSIL)
taeniale, Murchisoniceras taeniale (Barrande, 1866) † (FOSSIL)
tunguskense, Tunguskoceras tunguskense Balaschov † (FOSSIL)
yokoyamai, Loxoceras yokoyamai Kobayashi, 1928 † (FOSSIL)
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