The Phylogenetic Affinities of the Enigmatic Mammalian Clade Gondwanatheria

@article{Gurovich2008ThePA,
  title={The Phylogenetic Affinities of the Enigmatic Mammalian Clade Gondwanatheria},
  author={Yamila Gurovich and Robin M. D. Beck},
  journal={Journal of Mammalian Evolution},
  year={2008},
  volume={16},
  pages={25-49}
}
  • Y. Gurovich, R. Beck
  • Published 1 March 2009
  • Geography, Biology, Environmental Science
  • Journal of Mammalian Evolution
Gondwanatheria is a group of extinct mammals known from the Cretaceous and Paleogene of Gondwana. Resolution of the phylogenetic affinities of gondwanatherians has proven problematical, with the group currently considered Mammalia incertae sedis. We briefly review the morphology of known gondwanatherians, and argue that isolated upper premolars and a partial dentary preserving a blade-like p4 originally referred to the ferugliotheriid gondwanatherian Ferugliotherium windhauseni but subsequently… 
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50 Citations

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References

SHOWING 1-10 OF 85 REFERENCES
LATE CRETACEOUS SUDAMERICID GONDWANATHERIANS FROM INDIA WITH PALEOBIOGEOGRAPHIC CONSIDERATIONS OF GONDWANAN MAMMALS
Abstract Gondwanatherians are a distinctive Cretaceous radiation of Gondwanan mammals. Fieldwork in the intertrappean beds of Karnataka and Andhra Pradesh, India has yielded a substantial collection…
In quest for a phylogeny of Mesozoic mammals
TLDR
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 is proposed, suggesting that the “obtuse−angle symmetrodonts” are paraphyletic, and that they lack reliable and unambiguous synapomorphies.
First gondwanatherian mammal from Antarctica
Abstract Gondwanatherians are an enigmatic group of extinct non-therian mammals apparently restricted to some of the western Gondwanan continents (Late Cretaceous-early Palaeocene of South America,…
The first gnathic remains of Sudamerica: implications for gondwanathere relationships
ABSTRACT The Gondwanatheria is an enigmatic group of mammals known from the Late Cretaceous and Paleocene of Argentina and the Late Cretaceous of Madagascar and India. Although originally believed to…
Dual origin of tribosphenic mammals
TLDR
Phylogenetic and morphometric analyses including these newly discovered taxa suggest a different interpretation: that mammals with tribosphenic molars are not monophyletic.
A Cretaceous mammal from Tanzania
We report here the discovery of a Cretaceous mammal from the “Red Sandstone Group” of southwestern Tanzania. This specimen is one of only a very few Cretaceous mammals known from Gondwana in general…
Cosmopolitanism among Gondwanan Late Cretaceous mammals
TLDR
The occurrence of a highly specialized and distinctive group of extinct mammals, the Sudamericidae (Gondwanatheria), in the Late Cretaceous of Madagascar and India is reported, which is the first evidence of gondwanatheres outside South America and the first indication of cosmopolitanism among Late CRETaceous Gondwanan mammals.
The evolution of tribospheny and the antiquity of mammalian clades.
ADDITIONAL SPECIMENS OF SUDAMERICID (GONDWANATHERIA) MAMMALS FROM THE EARLY PALEOCENE OF ARGENTINA
TLDR
Dental morphology such as hypsodonty, enamel microstructure and crown features do support a robust clade for Sudamericidae, and earlier hypotheses on Sudamerica dental formula and tooth categories are supported.
The oldest platypus and its bearing on divergence timing of the platypus and echidna clades
TLDR
Evidence from high-resolution x-ray computed tomography indicating that Teinolophos, an Early Cretaceous fossil from Australia's Flat Rocks locality, lies within the crown clade Monotremata, as a basal platypus is described, suggesting that rate heterogeneities may have affected mammalian evolution in such a way as to defeat strict molecular clock models and to challenge even relaxed molecular Clock models when applied to mammalian history at a deep temporal scale.
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