Trilobita - Proetida - Dimeropygidae
Full reference: W. D. Boyce. 1989. Early Ordovician trilobite faunas of the Boat Harbour and Catoche Formations (St. George Group) in the Boat-Harbour-Cape Norman area, Great Northern Peninsula, western Newfoundland. Geological Survey Branch, Department of Mines and Energy, Newfoundland and Labrador, Report 89-2 1-168
Belongs to Ischyrotoma according to W. D. Boyce 1989
Sister taxa: Ischyrotoma anataphra, Ischyrotoma borealis, Ischyrotoma eos, Ischyrotoma juabensis, Ischyrotoma sila, Ischyrotoma stubblefieldi, Ischyrotoma twenhofeli, Ischyrotoma wahwahensis
Type specimen: NFM F-178, a cephalon/head. Its type locality is BH-95A-114, which is in a Cassinian peritidal lime mudstone/wackestone in the Catoche Formation of Canada.
Ecology: fast-moving low-level epifaunal deposit feeder
Distribution:
• Ordovician of Canada (1: Newfoundland and Labrador collection), Norway (2)
• Cassinian of Canada (2: Newfoundland and Labrador)
• Jeffersonian of Canada (3: Newfoundland, Newfoundland and Labrador)
Total: 8 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.