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Ostrica alata su Gorgonia rossa; Pteria hirundo (wing oyster) on a red gorgonian (Pramuricea clavata)
broken shell about 64.8mm
Galveston County, Texas, US
Cameron County, Texas, US
41.2mm in length.
The Pterioida are a suborder of large and medium-sized saltwater clams, marine bivalve mollusks. It includes five families, among them the Pteriidae (pearl oysters and winged oysters).
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