A TIME‐CALIBRATED SPECIES TREE OF CROCODYLIA REVEALS A RECENT RADIATION OF THE TRUE CROCODILES

@article{Oaks2011ATS,
  title={A TIME‐CALIBRATED SPECIES TREE OF CROCODYLIA REVEALS A RECENT RADIATION OF THE TRUE CROCODILES},
  author={Jamie R. Oaks},
  journal={Evolution},
  year={2011},
  volume={65}
}
  • J. Oaks
  • Published 1 November 2011
  • Environmental Science, Biology, Geography
  • Evolution
True crocodiles (Crocodylus) are the most broadly distributed, ecologically diverse, and species-rich crocodylian genus, comprising about half of extant crocodylian diversity and exhibiting a circumtropical distribution. [] Key Method In this study, these long-held notions about the temporal and geographic origin of Crocodylus are tested using DNA sequence data of 10 loci from 76 individuals representing all 23 crocodylian species.
Phylogenetic analysis of a new morphological dataset elucidates the evolutionary history of Crocodylia and resolves the long-standing gharial problem
TLDR
A new morphological dataset for Crocodylia is presented based on a critical reappraisal of published crocodylian character data matrices and extensive firsthand observations of a global sample of croc Codylians, which robustly recover Gavialis as more closely related to Tomistoma than to other extant cro codylians for the first time based on morphology alone.
Trait‐based range expansion aided in the global radiation of Crocodylidae
TLDR
Interestingly, the evolution of the range‐expansion phenotype was also associated with the diversification of the genus in a period of global crocodilian extinction, indicating that range expansion might have served as a potential driver of speciation.
Genetic evidence supports a distinct lineage of American crocodile (Crocodylus acutus) in the Greater Antilles
TLDR
The inclusion, for the first time, of samples from the western population of the American crocodile in Cuba revealed evidence for continental mtDNA haplotypes in the Antilles, suggesting this area may constitute a transition zone between distinct lineages of C. acutus.
Spatiotemporal sampling patterns in the 230 million year fossil record of terrestrial crocodylomorphs and their impact on diversity
The 24 extant crocodylian species are the remnants of a once much more diverse and widespread clade. Crocodylomorpha has an approximately 230 million year evolutionary history, punctuated by a series
Near-complete phylogeny of extant Crocodylia (Reptilia) using mitogenome-based data
TLDR
This study proves that the diversification rate within Crocodylia began to increase from the Late Eocene and two diversification peak periods of Croc Codylia are disclosed, which is roughly consistent with the estimated crocodylian species richness through time.
A Giant Crocodile from the Plio-Pleistocene of Kenya, the Phylogenetic Relationships of Neogene African Crocodylines, and the Antiquity of Crocodylus in Africa
TLDR
A phylogenetic analysis, including the new species and an improved sample of extinct crocodyline diversity, suggests a more complex phylogenetic and biogeographic history for the clade in Africa and the eastern Indian Ocean region than previously supposed.
How to date a crocodile: estimation of neosuchian clade ages and a comparison of four time‐scaling methods
TLDR
A detailed understanding of phylogenetic relationships, tree reconstruction methods, and good taxonomic coverage (in particular the inclusion of the oldest taxon in each clade) is essential when evaluating the results of such dating analyses.
Old African fossils provide new evidence for the origin of the American crocodiles
TLDR
Polecular and morphological phylogenies concur in indicating that the African lineages formerly referred to Crocodylus niloticus are the sister taxon the four Neotropical crocodiles, implying a transoceanic dispersal from Africa to America.
A multi-disciplinary approach to the analysis of crocodylian phylogeny, diversity and biogeographic history in Deep Time
TLDR
Character tracing reveals that similar modifications in the anterior of the skull underpin the evolution of longirostry in all clades, coupled with more clade-specific modifications of the posterior skull, which played an important role in neosuchian evolution.
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