Arthropods Newly named insects Name Novelty Status Authors Age Unit Location Notes ImagesRaphidia pulverisSp novjr synonymCockerellEocenePriabonianFlorissant FormationA raphidiid snakeflySynonymized with Megaraphidia exhumata in 2014
Dinosaurs Eugene Stebinger became the first to identify the Two Medicine Formation and to formally describe its first fossil finds, which were excavated the previous year.
New taxa Taxon Novelty Status Author(s) Age Unit Location Notes Images Anchiceratops ornatusBrown, B. 1914. Anchiceratops, a new genus of horned dinosaurs from the Edmonton Cretaceous of Alberta, with discussion of the origin of the ceratopsian crests and brain casts of Anchiceratops and Trachodon. Bull. Amer. Mus. Nat. Hist. 33: pp. 559-565. Gen. et sp. nov. Valid Brown Maastrichtian Horseshoe Canyon Formation A ceratopsid Brachyceratops montanensisGilmore, C.W. 1914. A new ceratopsian dinosaur from the Upper Cretaceous of Montana, with a note on Hypacrosaurus. Smithosian Miscellaneous Collections 43: pp. 1-10. Gen. et sp. nov. Nomen dubium Gilmore Campanian Two Medicine Formation A ceratopsid Chasmosaurus Gen. nov. Valid Lambe Campanian Dinosaur Park Formation A replacement name for Protorosaurus, a new genus for Monoclonius belli Corythosaurus casuarius Gen. et sp. nov. Valid Brown Campanian Dinosaur Park Formation A hadrosaurid Dicraeosaurus hansemanniJanensch, W. 1914. Ubersicht uber die Wirbeltierfauna der Tendaguru-Schichten nebst einer kurzen Charakterisierung der neu aufgefuhrten Arten von Sauropoden. Arch. Biontol. 3: pp. 81-110. Gen. et sp. nov. Valid Janensch Kimmeridgian Tendaguru Formation A Jurassic sauropod Dicraeosaurus sattleri Sp. nov. Valid Janensch Kimmeridgian Tendaguru Formation A second species of Dicraeosaurus Gorgosaurus libratus Gen. et sp. nov. Valid Lambe Campanian Dinosaur Park Formation A tyrannosaurid Gryposaurus notabilis Gen. et sp. nov. Valid Lambe Campanian Dinosaur Park Formation A hadrosaurid Leptoceratops gracilisBrown, B. 1914. Leptoceratops, a new genus of Ceratopsia from the Edmonton Cretaceous of Alberta. Bull. Amer. Mus. Nat. Hist. 33: pp. 567-580. Gen. et sp. nov Valid Brown Maastrichtian Scollard Formation An early ceratopsian Protorosaurus Gen. nov. Preoccupied Lambe Campanian Dinosaur Park Formation New genus for Monoclonius belli, but preoccupied by a non-dinosaurian archosauromorph von Meyer, 1830. Renamed Chasmosaurus. Stephanosaurus Gen. nov. Nomen dubium Lambe Campanian Dinosaur Park Formation A new genus name for Trachodon marginatus
Plesiosaurs New taxa Name Novelty Status Authors Age Unit Location Notes Images Brancasaurus Gen et sp novValid WegnerBerriasian Isterberg FormationA possibly freshwater dwelling plesiosaur
Pterosaurs New taxa Name Novelty Status Authors Age Unit Location Notes Images LonchodectesFam et Gen nov ValidHooleyLate Cretaceous An ornithocheiromorph
Synapsids Non-mammalian
Name Status Authors Age Location NotesImagesArctopsValidWatson255 million years ago A Gorgonopsian.MormosaurusValidWatson270 million years ago A Dinocephalian.MoschognathusValid263 million years ago PnigalionValid
Footnotes
References Trexler, D., 2001, Two Medicine Formation, Montana: geology and fauna: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, pp. 298–309.