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Evidence for Cenozoic extensional basin development and tectonic inversion south of the flat-slab segment, southern Central Andes, Chile (33°–36°S.L.)
Abstract The mainly volcanic Cenozoic deposits that make up much of the western part of the Principal Cordillera in Central Chile are generally subdivided into two major units: an older Abanico or…
The Tinguiririca Fauna, Chile: Biochronology, paleoecology, biogeography, and a new earliest Oligocene South American Land Mammal 'Age'
The Tinguirirican assemblages indicate that Simpson’s ‘Second Faunal Stratum’ began considerably earlier (prior to the Deseadan) than previously thought, and some non-analog aspects of middle Cenozoic South American localities relative to modern systems are revealed.
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…
Recent advances in South American mammalian paleontology.
Improved chronology of two major immigration events, documentation of the oldest mammalian faunas dominated by grazing taxa, evidence of early biogeographical provinciality within South America, and improved sampling of the best known Cenozoic tropical South American paleofauna are among the highlights.
A Middle Jurassic mammal from Madagascar
- J. J. Flynn, J. Parrish, B. Rakotosamimanana, William F Simpson, A. Wyss
- 2 September 1999
The lower molars of tribosphenic mammals (marsupials, placentals and their extinct allies) are marked, primitively, by a basined heel (talonid) acting as the mortar to the pestle of a large inner…
A NEW BASAL GLYPTODONTID AND OTHER XENARTHRA OF THE EARLY MIOCENE CHUCAL FAUNA, NORTHERN CHILE
A preliminary phylogenetic analysis of glyptodontids—the first for the group—suggests that Glyptatelinae and Propalaehoplophorinae are paraphyletic and that ParapropalaeHoplophorus is an early diverging glyptid, not closely related to other Santacrucian species.
A new fossil mammal assemblage from the southern Chilean Andes: implications for geology, geochronology, and tectonics
Abstract A diverse (36 taxa), new fossil terrestrial mammal assemblage has been recovered from the Santacrucian South American Land Mammal ‘Age’ (SALMA; latest Early Miocene) in the southern Andes of…
The Morphology of Tribosphenomys (Rodentiaformes, Mammalia): Phylogenetic Implications for Basal Glires
The results of the analyses confirm the outgroup placement of Tribosphenomys relative to Rodentia (in the crown-clade restricted sense of that name), and include a sister-group pairing of lagomorphs and rodents (Glires), with various extinct taxa interposed as sequential outgroups to each of these crown clades.
Notoungulata and Litopterna of the Early Miocene Chucal Fauna, Northern Chile
Three new species of mesotheriid notoungulates are described and a phylogenetic analysis places the three taxa from Chucal as early divergingMembers of the Mesotheriinae, with Eotypotherium chico representing the outgroup to all remaining members of the clade.