• Eocene of United States (1: Washington collection)

• Jurassic of Canada (4: British Columbia), India (1)

• Triassic of United States (1: Nevada)

• Carboniferous of United States (1: Montana)

• Devonian of United States (1: Ohio)

• Ordovician of Thailand (1), the United Kingdom (1)

Total: 11 collections each including a single occurrence