#leonardoceras
Leonardoceras
Leonardoceras is a genus of nautiloid cephalopods from the lower Middle Ordovician of Nevada (USA), the shell a small slender exogastric cyrtocone with the venter more narrowly rounded than the dorsum, resembling in overall form a small Bassleroceras. Septa are close spaced, the living chamber short, the siphuncle close to the venter.
Tue 18th
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