HOPLITACEAE: HOPLITIDAE
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Subfamily: HOPLITINAE H. Douvillé, 1890
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Genus: EPIHOPLITES SPATH,
1925
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Type species: Ammonites denarius J.Sowerby
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Epihoplites (including Metaclavites) is
the earliest of a distinct lineage of Late Albian genera including Callihoplites
and Arrhaphoceras. Early forms of Epihoplites are moderately involute,
discoidal, compressed shells, but this lineage soon becomes moderately
evolute, with rounded umbilical margin and whorl flanks which converge
towards a shallow sulcate venter. Ribbing, strong, convex, usually trifurcating
from tuberculate bullae at the umbilical margin; occasionally bifurcating.
Ribs end on the ventro-lateral margin in low, oblique, tuberculate, ventral
clavi projecting onto the venter into a low strut. The en-echelon arrangement
of the clavi across the venter produces a distinct zig-zag aspect.
(Ref H G Owen 1999)
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Subgenus: Epihoplites (Epihoplites) - Ribs ending
rather inconspicuously on shoulders.
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Epihoplites (Epihoplites) gibbosus Spath 1924 | |
Epihoplites (Epihoplites) glyptus, Spath 1924 |
Subgenus: Epihoplites (Metaclavithes) CASEY,
1965 - Ribs ending in ventrolateral clavi more or less parallel to siphuncle
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Epihoplites (Metaclavithes) aff. compressus (Parona & Bonarelli, 1896) | |
Epihoplites (Metaclavithes) trifidus (Spath 1923) |