• Triassic of China (2 collections), Iran (1)

• Permian of Italy (1), United States (1: Texas)

• Carboniferous of Spain (2), United States (1: Oklahoma)

• Devonian of Australia (6), Canada (1: Alberta), Spain (1), United States (4: New York, Tennessee)

• Silurian of Canada (1: Nunavut), United States (3: Indiana)

• Ordovician of Australia (1), the United Kingdom (1), United States (3: Kentucky, Ohio)

• Tremadoc of Argentina (1)

Total: 30 collections including 44 occurrences