Ectogrammysia hannibalensis Shumard and Swallow 1858 (clam)

Bivalvia - Cardiidia - Grammysiidae

Alternative combinations: Allorisma hannibalensis, Grammysia hannibalensis

Full reference: B. F. Shumard and G.C. Swallow. 1858. Descriptions of new fossils from the Coal Measures of Missouri and Kansas. Academy of Science of St. Louis Transactions 1:198-227

Belongs to Ectogrammysia according to R. D. Hoare et al. 1989

See also Shumard and Swallow 1858, Walcott 1884 and Williams 1943

Sister taxa: Ectogrammysia crassatis, Ectogrammysia inaffecta, Ectogrammysia prolata

Ecology: facultatively mobile infaunal suspension feeder

Distribution:

• Carboniferous of United States (1: Iowa collection)

• Devonian of Canada (1: Alberta), United States (2: Missouri)

Total: 4 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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