†Tropidodiscus minimus americanus Williams and Breger 1916 (snail)
Gastropoda - Bellerophontida - Tropidodiscidae
Full reference: H. S. Williams and C. L. Breger. 1916. The fauna of the Chapman Sandstone of Maine. United States Geological Survey Professional Paper 89:1-347
Belongs to Tropidodiscus minimus according to H. S. Williams and C. L. Breger 1916
Sister taxa: none
Ecology: slow-moving low-level epifaunal detritivore
Distribution: found only at locality 1099J, west of Presque Isle stream, Presque Township (Devonian of Maine)