• Carboniferous of China (1 collection), United States (39: Alabama, Indiana, Montana, Oklahoma)

• Devonian to Carboniferous of the United Kingdom (1)

• Devonian of Canada (1: Alberta), the Czech Republic (1), Morocco (1), New Zealand (1), South Africa (1), United States (8: Colorado, Iowa, Missouri, Montana, Ohio, Tennessee)

• Silurian of Canada (6: New Brunswick, Northwest Territories, Nova Scotia, Ontario), the Czech Republic (1), Estonia (1), Ireland (2), Mexico (2), Norway (1), Poland (1), Sweden (12), Ukraine (1), the United Kingdom (15), United States (34: Illinois, Indiana, Iowa, Maryland, New York, Oklahoma, Tennessee, West Virginia, Wisconsin)

• Letna of the Czech Republic (1)

• Ordovician of Canada (5: Ontario, Quebec), China (2), the Czech Republic (6), Estonia (18), France (1), Norway (3), South Africa (1), the United Kingdom (7), United States (85: Indiana, Iowa, Kentucky, Michigan, New York, Ohio, Pennsylvania, Tennessee, Virginia)

Total: 259 collections including 279 occurrences