Parent taxon: Soanitidae according to Q. Li et al. 2015
See also Church 1991 and Fan et al. 2002
Sister taxa: none
Subtaxa: Calathium formosum Calathium yersini
Type: Calathium formosum
Distribution:
• Permian of China (1 collection)
• Whiterockian of United States (2: New York, Utah)
• Chazyan of United States (2: Vermont)
• Arenig of Argentina (2), China (9), United States (7: Oklahoma, Texas)
• Arenigian of South Korea (1), United States (6: Nevada)
• Ordovician of Canada (4: Newfoundland, Newfoundland and Labrador), China (17), Malaysia (1), Norway (1), the Russian Federation (1), South Korea (2), the United Kingdom (1), United States (16: Oklahoma, Texas, Utah)
• Tremadoc of Argentina (2), China (8), South Korea (1), United States (1: Utah)
• Ibexian of United States (1: Utah)
Total: 86 collections including 87 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.