Cephalopoda - Goniatitida - Girtyoceratidae
Alternative combination: Girtyoceras jasperense
Full reference: M. Gordon. 1964. Carboniferous Cephalopods of Arkansas. United States Geological Survey Professional Paper 460:1-322
Belongs to Eumorphoceras (Sulcogirtyoceras) according to V. E. Ruzhentsev and M. F. Bogoslovskaya 1971
See also Gordon 1964
Sister taxa: Eumorphoceras (Sulcogirtyoceras) artumbilicatum, Eumorphoceras (Sulcogirtyoceras) burhennei, Eumorphoceras (Sulcogirtyoceras) coronula, Eumorphoceras (Sulcogirtyoceras) limatum, Eumorphoceras (Sulcogirtyoceras) mediolobum, Eumorphoceras (Sulcogirtyoceras) sagittarium, Eumorphoceras (Sulcogirtyoceras) weetsense
Type specimen: USNM 119626, a shell. Its type locality is USGS 14376, Jasper, which is in a Pendleian marine shale in the Fayetteville Formation of Arkansas.
Ecology: fast-moving nektonic carnivore
Average measurements (in mm): shell diameter 14.4
Distribution:
• Carboniferous of United States (3: Arkansas 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.