Edited by oilshale
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Chesapecten madisonius
Images: 
By sixgill pete (edited)
Taxonomy
Scallop Shell
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pterioida
Family: Pectinidae
Genus: Chesapecten
Species: Chesapecten madisonius
Author Citation (Say,1824)
Geological Time Scale
Eon: Phanerozoic
Era: Cenozoic
Period: Neogene
Sub Period: None
Epoch: Pliocene
International Age: Zanclean
Stratigraphy
Yorktown Formation
Rushmere Member
Provenance
Collector: Don Rideout
Date Collected: 06/11/2017
Acquired by: Field Collection
Dimensions
Length: 4 13/16 (122mm) "
Width: 5 1/8 (131mm) "
Location
Tar River
Edgecombe County
North Carolina
United States
Comments
These pectens are very common in the Rushmere Member of the Yorktown Formation in cuts and bluffs along certain portions of the Tar River in North Carolina. Many are extremely worn and even crumble to pieces when handles. Specimens with double valves are not uncommon. This specimen is in exceptional shape.
The final picture of the 3 specimens is to illustrate the growth of the species. They are all double valves, and range from 1 /4 inch long to 5 5/8 inch long.
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