A revision of the putative Late Cretaceous triconodonts from South America
Austrotriconodon mckennai and Austrotriconodon sepulvedai, from the Campanian Los Alamitos Formation, Patagonia, Argentina were originally described as triconodont mammals and the sole members of the family Austrotriconodontidae. These mammals were represented by isolated cheek teeth originally rega...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01956671_v46_n_p90_Gaetano |
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todo:paper_01956671_v46_n_p90_Gaetano2023-10-03T15:09:31Z A revision of the putative Late Cretaceous triconodonts from South America Gaetano, L.C. Marsicano, C.A. Rougier, G.W. Late Cretaceous Los Alamitos Formation Meridiolestida South America Triconodonts Campanian Cretaceous dentition fossil record mammal morphology paleontology taxonomy Argentina Patagonia Austrotriconodon mckennai and Austrotriconodon sepulvedai, from the Campanian Los Alamitos Formation, Patagonia, Argentina were originally described as triconodont mammals and the sole members of the family Austrotriconodontidae. These mammals were represented by isolated cheek teeth originally regarded as molariforms, but their peculiar morphology later raised doubts about their purported triconodont affinities. Nevertheless, the morphological bases supporting the alternative taxonomic views have not been fully documented. We present here detailed comparisons of Austrotriconodon with other Late Cretaceous taxa and conclude that Austrotriconodon specimens should be assigned to Meridiolestida and Mesungulatoidea. These isolated teeth are likely premolars and might represent unknown dental positions of already described species or correspond to taxa that are yet to be formally recognized. According to our interpretation, there is still no record of Cretaceous triconodonts in South America, but we support the triconodont affinities for Jurassic taxa from the Cañadón Asfalto Formation in central Patagonia. © 2013 Elsevier Ltd. Fil:Gaetano, L.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Marsicano, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rougier, G.W. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01956671_v46_n_p90_Gaetano |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Late Cretaceous Los Alamitos Formation Meridiolestida South America Triconodonts Campanian Cretaceous dentition fossil record mammal morphology paleontology taxonomy Argentina Patagonia |
| spellingShingle |
Late Cretaceous Los Alamitos Formation Meridiolestida South America Triconodonts Campanian Cretaceous dentition fossil record mammal morphology paleontology taxonomy Argentina Patagonia Gaetano, L.C. Marsicano, C.A. Rougier, G.W. A revision of the putative Late Cretaceous triconodonts from South America |
| topic_facet |
Late Cretaceous Los Alamitos Formation Meridiolestida South America Triconodonts Campanian Cretaceous dentition fossil record mammal morphology paleontology taxonomy Argentina Patagonia |
| description |
Austrotriconodon mckennai and Austrotriconodon sepulvedai, from the Campanian Los Alamitos Formation, Patagonia, Argentina were originally described as triconodont mammals and the sole members of the family Austrotriconodontidae. These mammals were represented by isolated cheek teeth originally regarded as molariforms, but their peculiar morphology later raised doubts about their purported triconodont affinities. Nevertheless, the morphological bases supporting the alternative taxonomic views have not been fully documented. We present here detailed comparisons of Austrotriconodon with other Late Cretaceous taxa and conclude that Austrotriconodon specimens should be assigned to Meridiolestida and Mesungulatoidea. These isolated teeth are likely premolars and might represent unknown dental positions of already described species or correspond to taxa that are yet to be formally recognized. According to our interpretation, there is still no record of Cretaceous triconodonts in South America, but we support the triconodont affinities for Jurassic taxa from the Cañadón Asfalto Formation in central Patagonia. © 2013 Elsevier Ltd. |
| format |
JOUR |
| author |
Gaetano, L.C. Marsicano, C.A. Rougier, G.W. |
| author_facet |
Gaetano, L.C. Marsicano, C.A. Rougier, G.W. |
| author_sort |
Gaetano, L.C. |
| title |
A revision of the putative Late Cretaceous triconodonts from South America |
| title_short |
A revision of the putative Late Cretaceous triconodonts from South America |
| title_full |
A revision of the putative Late Cretaceous triconodonts from South America |
| title_fullStr |
A revision of the putative Late Cretaceous triconodonts from South America |
| title_full_unstemmed |
A revision of the putative Late Cretaceous triconodonts from South America |
| title_sort |
revision of the putative late cretaceous triconodonts from south america |
| url |
http://hdl.handle.net/20.500.12110/paper_01956671_v46_n_p90_Gaetano |
| work_keys_str_mv |
AT gaetanolc arevisionoftheputativelatecretaceoustriconodontsfromsouthamerica AT marsicanoca arevisionoftheputativelatecretaceoustriconodontsfromsouthamerica AT rougiergw arevisionoftheputativelatecretaceoustriconodontsfromsouthamerica AT gaetanolc revisionoftheputativelatecretaceoustriconodontsfromsouthamerica AT marsicanoca revisionoftheputativelatecretaceoustriconodontsfromsouthamerica AT rougiergw revisionoftheputativelatecretaceoustriconodontsfromsouthamerica |
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1782030659010691072 |