• Triassic of Australia (2 collections), China (31), Hungary (1), Iran (2), Saudi Arabia (1)

• Permian of Australia (25), Austria (2), Azerbaijan (10), Canada (1: British Columbia), China (37), Greece (1), Hungary (7), Iran (18), Israel (3), Japan (1), Oman (30), Saudi Arabia (2), Serbia and Montenegro (2), Thailand (14), Turkey (2), Venezuela (2)

• Carboniferous of China (1), Spain (1), Ukraine (3), the United Kingdom (4), United States (25: California, Indiana, Kansas, Missouri, Nebraska, New Mexico, Oklahoma, Tennessee, Texas, Wyoming)

• Couvinien of Australia (1)

• Devonian of Canada (1: Ontario), the Czech Republic (1), Germany (9), the Russian Federation (1), United States (21: Michigan, New York, Ohio, Pennsylvania)

• Silurian of United States (1: Oklahoma)

Total: 263 collections including 356 occurrences