Ptilodus
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- (Mammalia, Allotheria) from the Earliest Tiffanian (Late Paleocene) Douglass Quarry, Eastern Crazy Mountains Basin, Montana
- Largest Known Mesozoic Multituberculate from Eurasia And
- Appendix: Hominidae Catalogue
- A Revision of the Tertiary Multituberculata
- The Endocranial Cast and Encephalization Quotient of Ptilodus (Mul Tituberculata, Mammalia)
- Proceedings of the United States National Museum
- Flora and Fauna of the Wannagan Creek Quarry: Late Paleocene of North America
- Genozoic Mammal Horizons of Western North America
- AMERICAN MUSEUM NOVITATES Published by Number 849 the AMERICAN MUSEUM of NATURAL HISTORY May 18 1936 New York City
- From Then 'Till Now… the Cenozoic
- The Extinction of the Multituberculates Outside North America: a Global Approach to Testing the Competition Model
- Comprehensive Bibliography of the Crazy Mountain Basin Project
- A New Suborder of Multituberculate Mammals
- The Enamel Ultrastructure of Multituberculate Mammals: a Review
- Higgins, P, 2003, a Wyoming Succession of Paleocene Mammal
- A Cretaceous Mammal from Tanzania
- Genus/Species Skull Ht Lt Wt Stage Range Aaptoryctes U.Paleocene W USA A