Carydium varicosum Hall and Whitfield 1869

Bivalvia - Modiomorphida - Carydiidae

Alternative combination: Nucula varicosa

Full reference: J. Hall and R. P. Whitfield. 1869. Preliminary notice of the lamellibranchiate shells of the upper Helderberg, Hamilton and Chemung groups, with others from the Waverly sandstones, part 2. 1-80

Belongs to Carydium according to J. B. Bailey 1986

See also Hall 1883 and Hall and Whitfield 1869

Sister taxa: Carydium bellastriatum, Carydium clarkei, Carydium globularis, Carydium manitobensis, Carydium sociale

Distribution: found only at halfway up side of 3rd waterfall, Shurger's Glen, neary Norton's Landing, Cayuga Lake, Ithaca (Devonian of New York)

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