Pycnodonte (Pegma) Squires and Demetrion 1990 (oyster)

Bivalvia - Ostreida - Gryphaeidae

Alternative spelling: Pegma

Full reference: R. L. Squires and R. Demetrion. 1990. New Eocene Marine Bivalves from Baja California Sur, Mexico. Journal of Paleontology 64(3):382-391

Parent taxon: Pycnodonte according to R. L. Squires and R. Demetrion 1990

See also Sepkoski 2002

Sister taxa: Gryphaea belli, Pycnodonta vesicularis, Pycnodonte (Costeina), Pycnodonte (Crenostrea), Pycnodonte (Gigantostrea), Pycnodonte (Phygraea), Pycnodonte (Pycnodonte), Pycnodonte amakusensis, Pycnodonte costei, Pycnodonte gryphovicinus, Pycnodonte heermanni, Pycnodonte percrassa, Pycnodonte squarrosa, Pycnodonte trigonalis, Pycnodonte vesicularis

Subtaxa: Pycnodonte (Pegma) bajaensis

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Type: Pycnodonte (Pegma) bajaensis

Ecology: stationary epifaunal suspension feeder

Distribution:

• Eocene of Mexico (6 collections)

Total: 6 collections each including a single occurrence

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