Was thought to be a sponge; later recognized to be an algae.
Subtaxa: Tetradium huronense
• Ordovician of Australia (27 collections), Canada (18: Ontario, Quebec), China (8), the Russian Federation (1), United States (122: Alaska, Georgia, Indiana, Kentucky, Michigan, New York, Ohio, Tennessee, Virginia)
• Chazy of Canada (1: Quebec)
Total: 177 collections including 214 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.