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Cretelamna appendiculata (Agassiz 1835) Shark tooth
(DSM# 10753) Extinct family of predatory shark that may be the ancestor of mega-toothed shark such as Megalodon and Otodus.
Cucullaea vulgaris (Morton 1830) Ark clam interior view
(DSM# 3184/FK144) Also known as a "False Ark Shell."
Cucullaea vulgaris (Morton 1830) Ark clam right/left valve
(DSM# 3121/FK145) Also known as a "False Ark Shell."
Cucullaea vulgaris (Morton 1830) Clam shells in matrix
(DSM FK149) Also known as a "False Ark Shell."
Cylindracanthus ornatus (Leidy 1865) Ray finned Fish rostrum
(DSM# 10668) This complete rostrum of a ray finned fish is a rare find.