Didymograptus is an extinct genus of graptolites with two rows of cups. They lived during the Middle Ordovician, to Late Ordovician.Didymograptus at Fossilworks.org
Distribution Fossils of Didymograptus have been found in Argentina, Australia, Bolivia, Canada (Northwest Territories, Quebec, Yukon, Newfoundland and Labrador), Chile, China, Colombia (Tarqui, Huila),Moreno et al., 2008, p.10 the Czech Republic, Estonia, France, Iran, Morocco, New Zealand, Norway, Peru, Portugal, the Russian Federation, Saudi Arabia, Spain, Sweden, the United Kingdom, the United States (Alaska, California, Idaho, Nevada, New York, Utah), and Venezuela.
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