Cephalopoda - Ceratitida - Trachyceratidae
Alternative combinations: Trachyceras (Protrachyceras) subasperum, Trachyceras subasperum
Full reference: F. B. Meek. 1877. Part I. Palaeontology. Report of the Geological Exploration of the Fortieth Parallel 4:1-197
Belongs to Eoprotrachyceras according to E. T. Tozer 1980
See also Meek 1877 and Smith 1914
Sister taxa: Eoprotrachyceras americanum, Eoprotrachyceras curionii, Eoprotrachyceras dunni, Eoprotrachyceras gibsoni, Eoprotrachyceras gredleri, Eoprotrachyceras lahontanum, Eoprotrachyceras matutinum, Eoprotrachyceras meeki
Ecology: nektonic carnivore
Average measurements (in mm): shell diameter 70.0
Distribution:
• Triassic of United States (3: Nevada collections)
Total: 3 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.