Cephalopoda - Tarphycerida - Trocholitidae
Full reference: E. O. Ulrich, A. F. Foerste, A. K. Miller and W. M. Furnish. 1942. Ozarkian and Canadian cephalopods, Part I: Nautilicones. Geological Society of America Special Papers 37:1-157
Parent taxon: Trocholitidae according to R. E. Crick 1981
See also Sepkoski 2002, Teichert et al. 1964 and Ulrich et al. 1942
Sister taxa: Curtoceras, Discoceras, Graftonoceras, Hardmanoceras, Jasperoceras, Litoceras, Palaeonautilus, Paradiscoceras, Plectolites, Schroederoceras, Trocholites, Trocholitoceras, Wichitoceras
Subtaxa: Arkoceras exiguum
Type: Arkoceras exiguum
Ecology: fast-moving nektobenthic carnivore
Distribution:
• Ordovician of Canada (1: Quebec collection), United States (1: Arkansas)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.