Hormotoma

Distribution:

• Devonian of France (1 collection), United States (3: Michigan, New York, Ohio)

• Silurian of Canada (46: Manitoba, Northwest Territories, Nova Scotia, Ontario, Québec), China (11), the Czech Republic (2), Estonia (1), Norway (1), the Russian Federation (5), Sweden (2), the United Kingdom (4), United States (62: Alaska, California, Georgia, Indiana, Maryland, Michigan, New York, Ohio, Virginia, West Virginia)

• Niagaran of United States (1: New York)

• Ordovician of Australia (3), Canada (91: Manitoba, Newfoundland, Northwest Territories, Nunavut, Ontario, Quebec, Québec), China (6), Estonia (1), Greenland (3), Norway (2), the United Kingdom (6), United States (167: Alaska, Arkansas, Georgia, Illinois, Iowa, Indiana, Iowa, Kentucky, Maryland, Michigan, Minnesota, Missouri, Montana, New Mexico, New York, Ohio, Tennessee, Texas, Utah, Virginia, Wisconsin, Wyoming)

• Llandeilo of China (2)

• Chazy of United States (1: New York)

• Whiterockian of Canada (1: Newfoundland and Labrador)

• Cassinian of Canada (2: Quebec), United States (23: Arkansas, Minnesota, Missouri, New Mexico)

• Arenig of China (8), United States (2: Montana, Oklahoma)

• Arenigian of United States (1: Virginia)

• Jefferson of United States (5: Missouri, Oklahoma, Texas)

• Jeffersonian of United States (2: Texas)

Total: 465 collections including 653 occurrences

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