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Class: CEPHALOPODA
--- Taxon Tree: AMMONOIDEA [Subclass]-AMMONITIDA [Order]-STEPHANOCERATOIDEA [Superfamily]
------ Family: PACHYCERATIDAE Buckman, 1918 † (Sea) (FOSSIL)
DB counters=27, Genus=6, Subgenus=0, Species=17, Subspecies=0, Synonyms=3, Images=6
DB counters include Fossil taxa: Species=17, Subspecies=0
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ajax, Erymnoceras ajax D'Orbigny, 1850 † (FOSSIL)
argoviensis, Erymnocerites argoviensis Jeannet, 1951 † (FOSSIL)
baylei, Erymnoceras baylei Jeannet, 1951 † (FOSSIL)
coronatum, Erymnoceras coronatum (Bruguière, 1789) † (FOSSIL)
coronatum, Erymnoceras coronatum D'Orbigny, 1842 † - syn of: Erymnoceras coronatum (Bruguière, 1789) † (FOSSIL)
coronoides, Erymnoceras coronoides Quenstedt, 1887 † (FOSSIL)
dimidiatum, Rollierites dimidiatum Jeannet, 1951 † (FOSSIL)
doliforme, Erymnoceras doliforme Roman, 1930 † (FOSSIL)
greppini, Erymnocerites greppini Jeannet, 1951 † (FOSSIL)
lalandeanum, Pachyceras lalandeanum (D'Orbigny, 1847) † (FOSSIL)
leckenbyi, Tornquistes leckenbyi (Arkell, 1946) † (FOSSIL)
leuthardti, Erymnocerites leuthardti Jeannet, 1951 † (FOSSIL)
mahipati, Pachyerymnoceras mahipati Jain, 2017 † (FOSSIL)
minuendum, Rollierites minuendum Jeannet, 1951 † (FOSSIL)
nodosum, Erymnoceras nodosum Jeannet, 1951 † (FOSSIL)
schloenbachi, Erymnoceras schloenbachi Roman, 1930 † (FOSSIL)
tenue, Rollierites tenue Jeannet, 1951 † (FOSSIL)
tuba, Rollierites tuba Jeannet, 1951 † (FOSSIL)
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