• Publications
  • Influence
Phylogeny and divergence-date estimates of rapid radiations in muroid rodents based on multiple nuclear genes.
TLDR
A phylogenetic study comprising 53 genera sequenced for four nuclear genes, GHR, BRCA1, RAG1, and c-myc, totaling up to 6400 nucleotides presents a revised classification for this largest but most unsettled mammalian superfamily. Expand
Comparative quantitative genetics : evolution of the G matrix
TLDR
It is proposed that a new field, comparative quantitative genetics, has emerged and the strengths and weaknesses of the many statistical and conceptual approaches now being employed are compared. Expand
Pliocene colonization and adaptive radiations in Australia and New Guinea (Sahul): multilocus systematics of the old endemic rodents (Muroidea: Murinae).
TLDR
The authors' results strongly supported monophyly of the Sahulian Old Endemic rodents and its sister relationship to the Philippine old endemics of the Chrotomys division, and support for the consensus topology increased with more (even conflicting) data. Expand
Ecological opportunity and incumbency in the diversification of repeated continental colonizations by muroid rodents.
TLDR
An extension of the conventional ecological opportunity model to include a geographic incumbency effect is presented, the largest muroid phylogeny to date is developed, and a pattern of incumbency that is consistent with ecological opportunity is seen, but they did not inhibit initial diversification rates of secondary colonizers. Expand
Nuclear DNA phylogeny of the squirrels (Mammalia: Rodentia) and the evolution of arboreality from c-myc and RAG1.
TLDR
A comprehensive molecular phylogeny for the family Sciuridae is reported on and Parsimony, likelihood, and Bayesian analyses reveal five major lineages and refute the conventional elevation of the flying squirrels (Pteromyinae) to subfamily status. Expand
Insights into the Ecology and Evolutionary Success of Crocodilians Revealed through Bite-Force and Tooth-Pressure Experimentation
TLDR
It is demonstrated that crocodilian reptiles generate the highest bite forces and tooth pressures known for any living animals. Expand
PHYLOGENETIC ANALYSIS OF PHENOTYPIC COVARIANCE STRUCTURE. I. CONTRASTING RESULTS FROM MATRIX CORRELATION AND COMMON PRINCIPAL COMPONENT ANALYSES
  • S. Steppan
  • Biology, Medicine
  • Evolution; international journal of organic…
  • 1 April 1997
TLDR
The hypothesis of constant covariances must be rejected, but the magnitudes of divergence in covariance structure appear to be small, and Matrix correlations are very sensitive to sampling error, while CPC is not. Expand
Phylogenomic evidence for multiple losses of flight in ratite birds
TLDR
A phylogenetic analyses of 20 unlinked nuclear genes reveal a genome-wide signal that unequivocally places tinamous within ratites, making ratites polyphyletic and suggesting multiple losses of flight. Expand
Molecular phylogeny of the endemic Philippine rodent Apomys (Muridae) and the dynamics of diversification in an oceanic archipelago
TLDR
The data imply that the species of Apomys have persisted for long periods, measured in mil- lions of years after their origins; further implications therefore are that faunal turnover is very slow, and persistence over geological time spans is more prominent than repeated colonization and extinction. Expand
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