Bivalvia - Cardiidia - Grammysiidae
Full reference: R. D. Hoare, M. J., I.I.I. Heaney, and R. H. Mapes. 1989. Bivalves (Mollusca) from the Imo Formation (Mississippian, Chesterian) of North-Central Arkansas. Journal of Paleontology 63(5):582-603
Parent taxon: Grammysiidae according to R. D. Hoare et al. 1989
See also Sepkoski 2002
Sister taxa: Andinodesma, Arenigomya, Asketomorpha, Cercomyopsis, Cimitaria, Cuneamya, Cuneamyinae, Fuchsella, Glyptoconcha, Grammysia, Grammysiinae, Leinzia, Sphenotus, Zaidiomysia, Protomya
Subtaxa: Ectogrammysia crassatis Ectogrammysia hannibalensis Ectogrammysia inaffecta Ectogrammysia prolata
Type: Ectogrammysia crassatis
Ecology: facultatively mobile infaunal suspension feeder
Distribution:
• Carboniferous of Mexico (10 collections), United States (7: Arkansas, Iowa, West Virginia)
• Devonian of Canada (1: Alberta), United States (2: Missouri)
Total: 20 collections including 22 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.