"Eighteen rodent species are recognized from the Fitterer Ranch fauna of North Dakota on the basis of more than a thousand collected specimens. Of the species recognized, four are new: the prosciurine aplodontiids Prosciurus hogansoni and Altasciurus leonardi, the heliscomyid Heliscomys boreali...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Korth, William W. (VerfasserIn), Emry, Robert J. 1940- (VerfasserIn), Boyd, Clint A. (VerfasserIn), Person, Jeff J. (VerfasserIn)
Format:	Buch
Sprache:	English
Veröffentlicht:	Washington, D.C. Smithsonian Institution Scholarly Press 2019
Schriftenreihe:	Smithsonian contributions to paleobiology number 103
Schlagworte:	Fossile Nagetiere Oligozän North Dakota Rodents, Fossil / North Dakota Paleontology / Oligocene Paleontological excavations / North Dakota Oligocene Geologic Epoch Paleontological excavations Paleontology Rodents, Fossil From 25 to 40 million years ago
Zusammenfassung:	"Eighteen rodent species are recognized from the Fitterer Ranch fauna of North Dakota on the basis of more than a thousand collected specimens. Of the species recognized, four are new: the prosciurine aplodontiids Prosciurus hogansoni and Altasciurus leonardi, the heliscomyid Heliscomys borealis, and the cricetid Eumys lammersi. A previously described castorid from this fauna, Oligotheriomys primus Korth, 1998, is considered a synonym of "Eutypomys" magnus Wood, 1937, on the basis of the recovery of lower dentitions but is retained in the genus Oligotheriomys. A single specimen is questionably referred to Microparamys, a genus elsewhere limited to the Eocene (Clarkforkian-Chadronian land mammal ages). The rodent fauna appears to be a combination of predominantly Orellan and Whitneyan species (early Oligocene), suggesting that the section might transcend the Orellan-Whitneyan boundary. However, the rodent fauna does not alter significantly from the lowest to the highest horizons."--Provided by publisher
Beschreibung:	IV, 45 Seiten Illustrationen 28 cm