Arca (Arca) williamsoni Olsson 1967 (ark)

Bivalvia - Arcida - Arcidae

Full reference: A. A. Olsson. 1967. Some Tertiary mollusks from South Florida and the Carribean. Paleontological Research Institute 1-61

Belongs to Arca (Arca) according to A. A. Olsson 1967

Sister taxa: Arca (Arca) aquila, Arca (Arca) boucardi, Arca (Arca) bowdeniana, Arca (Arca) filewiczi, Arca (Arca) givensi, Arca (Arca) gonzalesi, Arca (Arca) hatchetigbeensis, Arca (Arca) imbricata, Arca (Arca) kelirensis, Arca (Arca) lomasdesamba, Arca (Arca) menengtengana, Arca (Arca) navicularis, Arca (Arca) noae, Arca (Arca) patagonica, Arca (Arca) petropolitana, Arca (Arca) praeboucardi, Arca (Arca) sakamizuensis, Arca (Arca) sisquocensis, Arca (Arca) subcalcarea, Arca (Arca) subprotracta, Arca (Arca) suspecta, Arca (Arca) terminumbonis, Arca (Arca) uedai, Arca (Arca) yaquensis

Type specimen: USNM 645148, a shell

Ecology: stationary epifaunal suspension feeder

Distribution: found only at Pinecrest [Pinecrest Mbr, Tamiami Fm] (Pliocene of Florida)

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