New Materials of Argentoconodon fariasorum (Mammaliaformes, Triconodontidae) from the Jurassic of Argentina and Its Bearing on Triconodont Phylogeny

@inproceedings{Gaetano2011NewMO,
  title={New Materials of Argentoconodon fariasorum (Mammaliaformes, Triconodontidae) from the Jurassic of Argentina and Its Bearing on Triconodont Phylogeny},
  author={Leandro C. Gaetano and Guillermo W. Rougier},
  year={2011}
}
ABSTRACT Argentoconodon fariasorum is the only triconodont from the Jurassic of South America. Originally described on the basis of an upper molariform, A. fariasorum is now known by several specimens, including one that preserves most of its dentition, upper and lower jaws, and several postcranial elements. Close anatomical similarity exists between Argentoconodon fariasorum, Ichthyoconodon jaworowskorum, from the Cretaceous of Morocco, and the likely Jurassic Volaticotherium antiquus, from… Expand
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References

SHOWING 1-10 OF 140 REFERENCES
A new genus of triconodont mammals from the Early Cretaceous of Western Siberia
TLDR
A new triconodont mammalfrom the Early Cretaceous Shestakovo 1 locality inWestern Siberia is described and paraphyletic origin of Amphilestidae is suggested, which is regarded as a key group for the understanding of dental evolution of Mesozoic mammals. Expand
AN EARLY CRETACEOUS MAMMAL FROM THE KUWAJIMA FORMATION (TETORI GROUP), JAPAN, AND A REASSESSMENT OF TRICONODONT PHYLOGENY
TLDR
One of the oldest known Japanese mammals, a triconodont lower jaw from the Early Cretaceous Kuwajima Formation, Tetori Group, Japan, is described, highlighting the central role of triconsodonts for early mammalian history and corroborates recent findings indicating that traditional groups of Mesozoic mammals such as Tricondonta, Amphilestidae, and Symmetrodonta are artificial. Expand
Triconodont mammals from the medial Cretaceous of Utah
TLDR
Three new species of triconodontid mammals are described from the upper part of the Cedar Mountain Formation, Emery County, Utah; the largest, at an estimated body weight of 750 g, is the largest known tricondontid and presumably incorporated vertebrate prey into its diet. Expand
New triconodontids (Mammalia) from the Lower Cretaceous Shahai and Fuxin formations, northeastern China
The first triconodontids from Asia have been discovered from the Lower Cretaceous (Aptian to Albian) Shahai and Fuxin formations in Liaoning Province, northeastern China: Meiconodon lii gen. and sp.Expand
Late Early Jurassic Mammaliaforms from Huizachal Canyon, Tamaulipas, México
Abstract Previous reports of the fossil vertebrates from the upper Lower Jurassic La Boca Formation of Tamaulipas, México, presented descriptions of a tritylodontid therapsid, a burrowing diapsid,Expand
A New Specimen of Eurylambda aequicrurius and Considerations on “Symmetrodont” Dentition and Relationships
TLDR
The proposed homologies imply that the stylocone is ancestrally a small cusp in the lineage leading to Theria and that the development of a parastylar lobe or “hook” is a derived feature of post-tinodontid mammals, resulting in a more complex origin for the therian upper molar than previously recognized. Expand
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. Expand
First haramiyid (Mammalia, Allotheria) from the Mesozoic of Gondwana
TLDR
Staffia aenigmatica gen. nov. is the first record of a haramiyid from Gondwana, and also the youngest stratigraphic occurrence for this allotherian group so far. Expand
Ichnotaxonomic revision of Ameghinichnus , a mammalian ichnogenus from the Middle Jurassic La Matilde Formation, Santa Cruz province, Argentina
TLDR
The ichnological assemblage from the Estancia Laguna Manantiales, from the Middle Jurassic La Matilde Formation, Santa Cruz province, Argentina, is exceptional both in diversity and abundance and different criteria used to distinguish mammalian imprints from non-mammalian tracks are commented. Expand
THE OSTEOLOGY OF RHOMBOMYLUS (MAMMALIA, GLIRES): IMPLICATIONS FOR PHYLOGENY AND EVOLUTION OF GLIRES
TLDR
This study consists of a taxonomic revision of the genus, a detailed description of the osteological morphology, extensive analyses on morphological characters, analyses on phylogeny, discussions on divergence time of the Glires, and analyses on functional morphology of mastication and locomotion. Expand
...
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5
...