In quest for a phylogeny of Mesozoic mammals (2008)
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...
DIGITAL CRANIAL ENDOCAST OF PUCADELPHYS ANDINUS, A PALEOCENE METATHERIAN (2007)
THOMAS E. MACRINI, CHRISTIAN DE MUIZON, RICHARD L. CIFELLI, TIMOTHY ROWE
EVOLUTION OF DENTAL REPLACEMENT IN MAMMALS (2004)
ZHE-XI LUO, ZOFIA KIELAN-JAWOROWSKA, RICHARD L. CIFELLI
We provide a review of dental replacement features in stem clades of mammals and an hypothetical outline for the evolution of replacement frequency, mode, and sequence in early mammalian evolution....
The Mussentuchit local fauna, upper Cedar Mountain Formation (Cretaceous: Albian–Cenomanian), Utah, includes the geologically oldest marsupials: Kokopellia juddi, described previously, and three...
A new teiid lizard from the Cedar Mountain Formation (Albian–Cenomanian Boundary) of Utah (2002)
RANDALL L. NYDAM, RICHARD L. CIFELLI
A heretofore unknown teiid lizard, recovered from the Cedar Mountain Formation (Albian–Cenomanian boundary) of Emery County, Utah, is the oldest teiid that is represented by numerous specimens....
Lizards from the Lower Cretaceous (Aptian–Albian) Antlers and Cloverly Formations (2002)
RANDALL L. NYDAM, RICHARD L. CIFELLI
Recent discoveries from the Aptian–Albian Antlers (Oklahoma) and Cloverly (Montana, Wyoming) formations provide significant additions to the Early Cretaceous record of lizards in North America. The...
CHRISTIAN DE MUIZON, RICHARD L. CIFELLI
Szalinia gracilis, gen. et sp. nov. is a new “didelphoid” marsupial from the early Paleocene beds of the Santa Lucía Formation at Tiupampa (Bolivia). It is characterized by a short rostrum and a...
SAUROPOSEIDON PROTELES, A NEW SAUROPOD FROM THE EARLY CRETACEOUS OF OKLAHOMA (2000)
MATHEW J. WEDEL, RICHARD L. CIFELLI, R. KENT SANDERS
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 southeastern...
Cifelli, Richard L., Kirkland, James I., Weil, Anne, Deino, Alan L., Kowallis, Bart J.
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...
Cifelli, Richard L., Kirkland, James I., Weil, Anne, Deino, Alan L., Kowallis, Bart J.
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...