Helcionelloida - Helcionellida - Stenothecidae
Alternative combination: Mellopegma georginensis
Full reference: B. Runnegar and P.A. Jell. 1976. Australian Middle Cambrian molluscs and their bearing on early molluscan evolution. Alcheringa 1(1/2):109-138
Belongs to Mellopegma according to Y. Oh et al. 2025
See also Landing et al. 2002, Runnegar and Jell 1976, Vendrasco et al. 2011, Vendrasco et al. 2010 and Wagner 2023
Sister taxa: Mellopegma indecora, Mellopegma schizocheras, Mellopegma simesi, Mellopegma uslonica
Type specimen: Its type locality is QML1286 km SSW of Thorntonia Homestead, which is in a Floran carbonate limestone in the Gowers Formation of Australia.
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cambrian of Australia (4 collections), Canada (2: British Columbia, Quebec), Greenland (3), United States (3: New York, Utah)
• Templetonian of Australia (1)
Total: 13 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.