#lyecoceras
Lyecoceras
Lyecoceras is a gender of slender endogastrically curved orthocerids, so determined by identification of the hyponomic sinus on the concave side. The siphuncle is dorsal of the center, toward the convex side of the shell. The surface has faint longitudinal striae and is encircled by weak annulations.
Tue 18th
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