Polycaulodus
Distribution:
• Arenig of China (2 collections)
• Ordovician of Argentina (1), the Russian Federation (1), United States (3: Oklahoma, Wyoming)
Total: 7 collections including 12 occurrences
Distribution:
• Arenig of China (2 collections)
• Ordovician of Argentina (1), the Russian Federation (1), United States (3: Oklahoma, Wyoming)
Total: 7 collections including 12 occurrences