Trilobita - Proetida - Dimeropygidae
Alternative combination: Ischyrotoma caudanodosa
Full reference: R. J., J.r. Ross. 1951. Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas. Yale Peabody Museum of Natural History Bulletin 6:1-161
Belongs to Dimeropygiella according to J. M. Adrain et al. 2001
See also Ross 1951 and Whittington 1963
Sister taxa: Dimeropygiella blanda, Dimeropygiella fillmorensis, Dimeropygiella mccormicki, Dimeropygiella ovata
Type specimen: YPM 18127, a cephalon/head (cranidium). Its type locality is Locality 13, Round Hill, Zone "J", which is in a Blackhillsian shallow subtidal limestone/chert in the Garden City Formation of Utah.
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Whiterockian of United States (4: Utah collections)
• Ordovician of Canada (1: Alberta), United States (10: California, Nevada, Utah)
• Tremadoc of Canada (1: Alberta)
Total: 16 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.