Calliostoma mitchelli philanthropus
By MikeR
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Order Trocida
Family Calliostomidae
Calliostoma mitchelli philanthropus (Conrad, 1834)
Statigraphy: Pinecrest Sand Member of the Tamiami Formation
Location: SMR Phase 10 Pit, Sarasota County, Florida USA.
Status: Extinct
Notes: This top shell displays quite a bit of variation. Conrad (1834) described both C. mithchelli and C. philanthropus. Later authors such as Dall (1892) and Mansfield (1930) placed several subspecies within C. philanthropus. Of 30 Calliostoma species/subspecies from the Upper Pliocene, Campbell (1993) recognized 19. Two stocks were dominate C. virginicum and C. mitchelli which took page precedence over C. philanthropus and which former subspecies are now named.
From the album:
Gastropods of the Tamiami Formation
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