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New Cretaceous and Tertiary Pholadidae (Mollusca: Bivalvia) from California
Published online by Cambridge University Press: 20 May 2016
Abstract
Cretaceous and early Tertiary Pholadidae (Mollusca: Bivalvia) from the Pacific Slope of North America are rare and only poorly known. Three new species, each the earliest known Pacific Slope representative of its respective genus, are described: Barnea (Anchomasa) saulae n. sp. (Pholadinae) from the Upper Cretaceous (Coniacian and Santonian) Redding Formation near Redding, uppermost Sacramento Valley, Shasta County, northern California; Chaceia fulcherae n. sp. (Martesiinae) from three widely separated areas of outcrop represented by 1) the middle Miocene (“Temblor”) Temblor Formation near Oil City and in Jasper Canyon, western Fresno County, central California, 2) the middle Miocene (“Temblor”) Topanga(?) Group in the northern Santa Ana Mountains, Orange County, southern California, and 3) the upper Miocene (Wishkahan) Montesano Formation on the Middle Fork of the Satsop River, Mason County, western Washington; and Netastoma squiresi n. sp. (Jouannetiinae) from the lowest Eocene (uppermost “Meganos”) part of the Santa Susana Formation north of Simi Valley in the Santa Susana Mountains, Ventura County, southern California.
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