Trilobita - Proetida - Dimeropygidae
Full reference: R. A. Fortey. 1979. Early Ordovician trilobites from the Catoche Formation (St. George Group), western Newfoundland. Geological Survey of Canada Bulletin 321:61-114
Belongs to Ischyrotoma according to R. A. Fortey 1979
Sister taxa: Ischyrotoma borealis, Ischyrotoma eos, Ischyrotoma juabensis, Ischyrotoma parallela, Ischyrotoma sila, Ischyrotoma stubblefieldi, Ischyrotoma twenhofeli, Ischyrotoma wahwahensis
Type specimen: GSC 56879, a cephalon/head. Its type locality is Catoche Formation type section, which is in a Cassinian open shallow subtidal limestone/dolomite in the Catoche Formation of Canada.
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Arenig of Greenland (1 collection)
• Ordovician of Canada (17: Newfoundland, Newfoundland and Labrador)
Total: 18 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.