Classification of Ward and Blackwelder 1975

Superfm. Pectinacea Rafinesque 1815
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Fm. Pectinidae Wilkes 1810 [scallop]
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Subfm. Chlamydinae von Teppner 1922
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G. †Chesapecten Ward and Blackwelder 1975
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Chesapecten middlesexensis Mansfield 1936
Chesapecten nefrens Ward and Blackwlder 1975
Subg. †Chlamys (Lyropecten) Conrad 1862
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