Alternative combinations: Euomphalus inornatus, Trochonema inornatum
Full reference: J. F. Whiteaves. 1884. On some new, imperfectly characterized or previously unrecorded species of fossils from the Guelph Formations of Ontario. Palaeozoic Fossils 3(1):1-43
Sister taxa: Pachystrophia balclatchiensis, Pachystrophia contiguus, Pachystrophia devexa, Pachystrophia dilatata, Pachystrophia gotlandicus, Pachystrophia helicoides, Pachystrophia inchoans, Pachystrophia lescarboti, Pachystrophia mullockensis, Pachystrophia orinini, Pachystrophia subuloidea, Pachystrophia triquestra, Pachystrophia tuba, Pachystrophia vortex
Type specimen: Its type locality is Eurypterid-associated biota of the dolomite of the Lockport Fmn. at Elora, Ont., which is in a Ludlow open shallow subtidal dolomite in the Guelph Formation of Canada.
Ecology: stationary epifaunal suspension feeder
• Silurian of Canada (2: Ontario collections)
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.