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Mercenaria permagna
Images: 
By MikeR
Taxonomy
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Venerida
Family: Veneridae
Genus: Mercenaria
Species: Mercenaria permagna
Author Citation (Conrad, 1838)
Geological Time Scale
Eon: Phanerozoic
Era: Cenozoic
Period: Quaternary
Sub Period: None
Epoch: Pleistocene
International Age: Calabrian
Stratigraphy
Waccamaw Formation
Provenance
Collector: Michael Reagin
Date Collected: 03/01/2003
Acquired by: Field Collection
Dimensions
Width: 142 mm
Height: 111 mm
Thickness: 74 mm
Location
Old Dock
Columbus County
North Carolina
United States
Comments
Campbell lists M. permagna as an extinct subspecies of M. campechiensis. Typically longer and less inflated than the extant species.
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