Pterobranchia - Graptoloidea - Diplograptidae
Alternative combinations: Diplograptus (Orthograptus) quadrimucronatus, Glossograptus (Orthograptus) quadrimucronatus, Glossograptus quadrimucronatus, Graptolithus quadrimucronatus, Graptolithus quardrimucronatus
Full reference: J. Hall. 1865. Graptolites of the Quebec Group: Figures and descriptions of Canadian organic remains, Decade II 1-151
Belongs to Orthograptus according to D. Goldman 1995
See also Hall 1865, Mitchell 1987, Nõlvak and Goldman 2007, Ruedemann 1908 and White 1874
Sister taxa: Orthograptus eucharis, Orthograptus fastigatus, Orthograptus pageanus, Orthograptus ruedemanni, Orthograptus spinigerus, Orthograptus thorsteinssoni
Distribution:
• Ordovician of Belgium (1 collection), Canada (7: Northwest Territories, Ontario, Québec), China (7), Kazakhstan (5), the Russian Federation (1), Sweden (1), United States (19: Alaska, Idaho, Michigan, New York, Pennsylvania, Texas)
Total: 41 collections including 43 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.