Author pages are created from data sourced from our academic publisher partnerships and public sources.
- Publications
- Influence
In quest for a phylogeny of Mesozoic mammals
- Z. Luo, Zofia Kielan-Jaworowska, R. Cifelli
- Biology
- 2002
We propose a phylogeny of all major groups of Mesozoic mammals based on phylogenetic analyses of 46 taxa and 275 osteological and dental characters, using parsimony methods (Swofford 2000). Mammalia… Expand
- 266
- 38
- PDF
Dual origin of tribosphenic mammals
- Zhexi Luo, R. Cifelli, Z. Kielan-Jaworowska
- Biology, Medicine
- Nature
- 4 January 2001
Marsupials, placentals and their close therian relatives possess complex (tribosphenic) molars that are capable of versatile occlusal functions. This functional complex is widely thought to be a key… Expand
Osteology, paleobiology, and relationships of the sauropod dinosaur Sauroposeidon
- M. Wedel, R. Cifelli, R. Sanders
- Geology
- 2000
Wedel, M.J., Cifelli, R.L., & Sanders, R.K. 2000. Osteology, paleobiology, and relationships of the sauropod dinosaur Sauroposeidon. -Acta Palaeontologica Polonica 45,4, 343-388. Sauroposeidon… Expand
- 141
- 24
- PDF
High-precision 40Ar/39Ar geochronology and the advent of North America's Late Cretaceous terrestrial fauna.
- R. Cifelli, J. I. Kirkland, A. Weil, A. Deino, B. Kowallis
- Biology, Medicine
- Proceedings of the National Academy of Sciences…
- 14 October 1997
A densely sampled, diverse new fauna from the uppermost Cedar Mountain Formation, Utah, indicates that the basic pattern of faunal composition for the Late Cretaceous of North America was already… Expand
Magnetic Polarity Stratigraphy and Mammalian Fauna of the Deseadan (Late Oligocene-Early Miocene) Salla Beds of Northern Bolivia
- B. MacFadden, K. Campbell, +4 authors P. Zeitler
- Geology
- The Journal of Geology
- 1 May 1985
The Salla Beds contain a rich assemblage of Deseadan mammals that traditionally has been considered of early Oligocene age. These deposits, located 90-100 km SE of La Paz, Bolivia, consist of more… Expand
2. Mammalian Biochronology of the Latest Cretaceous
- R. Cifelli, Jaelyn Eberle, D. Lofgren, J. Lillegraven, W. A. Clemens, M. O. Woodburne
- Geography
- 31 January 2004
Earliest known Australian Tertiary mammal fauna
- H. Godthelp, M. Archer, R. Cifelli, Suzanne J. Hand, C. Gilkeson
- Biology
- Nature
- 1 April 1992
REMAINS of Early Eocene vertebrates from freshwater clays near Murgon, southeastern Queensland, represent Australia's oldest marsupials, bats, non-volant placentals, frogs, madtsoiid snakes,… Expand
The Campanian Terlingua local fauna, with a summary of other vertebrates from the Aguja Formation, Trans-Pecos Texas
- T. Rowe, R. Cifelli, T. Lehman, A. Weil
- Geology
- 15 December 1992
ABSTRACT The Terlingua local fauna is a rich assemblage of predominantly terrestrial micro vertebrates from the Upper Cretaceous Aguja Formation of Trans-Pecos Texas. Marine invertebrates (which… Expand
SAUROPOSEIDON PROTELES, A NEW SAUROPOD FROM THE EARLY CRETACEOUS OF OKLAHOMA
- M. Wedel, R. Cifelli, R. Kent Sanders
- Geology
- 17 April 2000
Abstract Sauroposeidon proteles, a new brachiosaurid sauropod, is represented by an articulated series of four mid-cervical vertebrae recovered from the Antlers Formation (Aptian–Albian) of… Expand