†Chesapecten jeffersonius septenarius Say 1824
Bivalvia - Pectinida - Pectinoidae
Alternative combinations: Chesapecten septenarius, Chlamys (Lyropecten) jeffersonia septenaria, Pecten (Chlamys) jeffersonius septenarius, Pecten (Lyropecten) jeffersonius septenarius, Pecten septenarius
Belongs to Chesapecten jeffersonius according to T. G. Gibson 1987
See also Gardner 1943 and Ward and Blackwelder 1975
Sister taxa: none
Distribution:
• Pliocene of United States (6: Florida, South Carolina collections)
Total: 6 collections each including a single occurrence