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Impacts of the Cretaceous Terrestrial Revolution and KPg Extinction on Mammal Diversification
Molecular phylogenetic analysis, calibrated with fossils, resolves the time frame of the mammalian radiation and diversification analyses suggest important roles for the Cretaceous Terrestrial Revolution and KPg mass extinction in opening up ecospace that promoted interordinal and intraordinal diversification, respectively.
The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals
A phylogenetic tree shows that crown clade Placentalia and placental orders originated after the K-Pg boundary, but phenomic signals overturn molecular signals to show Sundatheria (Dermoptera + Scandentia) as the sister taxon of Primates, a close link between Proboscidea and Sirenia (sea cows), and the monophyly of echolocating Chiroptera (bats).
Molecular phylogeny of the carnivora (mammalia): assessing the impact of increased sampling on resolving enigmatic relationships.
This study analyzed 76 species of Carnivora using a concatenated sequence of 6243 bp from six genes, representing the most comprehensive sampling yet undertaken for reconstructing the phylogeny of this clade.
Single origin of Malagasy Carnivora from an African ancestor
A multi-gene phylogenetic analysis is used to show that Malagasy carnivorans are monophyletic and thus the product of a single colonization of Madagascar by an African ancestor, and that a single event cannot explain the presence of both groups in Madagascar.
Evidence for Cenozoic extensional basin development and tectonic inversion south of the flat-slab segment, southern Central Andes, Chile (33°–36°S.L.)
The Tinguiririca Fauna, Chile: Biochronology, paleoecology, biogeography, and a new earliest Oligocene South American Land Mammal 'Age'
Phylogeny of the Carnivora (Mammalia): congruence vs incompatibility among multiple data sets.
Conditional data combination analyses of the four independent data sets indicate that the phylogenetic results derived from each generally agree, with two exceptions, and demonstrates that while a CDC method may reject the null hypothesis of homogeneity for a particular partition, including that partition in combined analyses, may nevertheless provide an overall increase in phylogenetic signal.
Cenozoic South American Land Mammal Ages: Correlation to Global Geochronologies
South America's earliest rodent and recognition of a new interval of mammalian evolution
THE mid-Cenozoic immigration of rodents and primates to South America (when it was widely isolated by oceans) represents a pre-eminent problem in the biogeographical history of placental mammals. The…
A Miocene hyperdiverse crocodylian community reveals peculiar trophic dynamics in proto-Amazonian mega-wetlands
- R. Salas-Gismondi, J. J. Flynn, P. Baby, Julia V. Tejada-Lara, F. Wesselingh, P. Antoine
- Environmental Science, GeographyProceedings of the Royal Society B: Biological…
- 7 April 2015
Two new species-rich bonebeds from late Middle Miocene proto-Amazonian deposits of northeastern Peru document the same hyperdiverse assemblage of seven co-occurring crocodylian species, including a stem caiman—Gnatusuchus pebasensis—bearing a massive shovel-shaped mandible, procumbent anterior and globular posterior teeth, and a mammal-like diastema.