m. bayshorensis †C. m. hunterae †C. monicae †C. nefrens †C. patagonensis †C. quinarius †C. santamaria †C. sayanus †C. septenarius †C. skiptonensis References Further reading Online photo gallery with several pictures of Chesapecten nefrens Information about Chesapecten from the Global Biodiversity Information Facility Images of Chesapecten from Google Images Pectinidae Prehistoric bivalve genera Neogene bivalves Miocene genus first appearances Pleistocene genus extinctions Prehistoric bivalves of North America