التفاصيل البيبلوغرافية
| العنوان: |
The megatherioid sloth 'Xyophorus' villarroeli from the late Miocene of Achiri (Bolivia) |
| المؤلفون: |
Pujos, François, Gaudin, Timothy J., Boscaini, Alberto, Abello, M. Alejandra, Alejandra, Andrade Flores, Rubén, Fernandez-Monescillo, Marcos, Mamani Quispe, Bernardino, Marivaux, Laurent, Pramparo, Mercedes B., Antoine, Pierre-Olivier, Münch, Philippe |
| المساهمون: |
Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales Mendoza (CONICET-IANIGLA), Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Universidad Nacional de Cuyo Mendoza (UNCUYO), Department of Biology, Geology and Environmental Science, University of Tennessee at Chattanooga, Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), Consejo Nacional de Investigaciones Científicas y Técnicas Buenos Aires (CONICET)-Facultad de Ciencias Exactas y Naturales Buenos Aires (FCEyN), Universidad de Buenos Aires Buenos Aires (UBA)-Universidad de Buenos Aires Buenos Aires (UBA), Facultad de Ciencias Naturales y Museo La Plata (FCNyM), Universidad Nacional de la Plata Argentine (UNLP), Museo Nacional de Historia Natural de Bolivia (MNHN-Bol), Universidad Nacional de Córdoba Argentina, Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS), Géosciences Montpellier, Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), PICT 2010-1805, MINCyT-ECOS A14U01, NGS 9971-16, and EC-44712R-18, Asociación Paleontológica Argentina |
| المصدر: |
XII Congreso de la Asociación Paleontológica (CAPA) ; https://hal.umontpellier.fr/hal-03446957 ; XII Congreso de la Asociación Paleontológica (CAPA), Asociación Paleontológica Argentina, Nov 2021, Online, Argentina. pp.197-198 |
| بيانات النشر: |
HAL CCSD |
| سنة النشر: |
2021 |
| المجموعة: |
Université de Montpellier: HAL |
| مصطلحات موضوعية: |
[SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
| جغرافية الموضوع: |
Online, Argentina |
| الوصف: |
International audience ; Miocene vertebrate localities are uncommon in central South America. In Bolivia, the best known mammalian faunas ofthis period come from Quebrada Honda (late middle Miocene, Tarija Department) and Cerdas (early middle Miocene, PotosíDepartment). The Achiri locality (La Paz Department) was reported first by Hoffstetter in 1972. Subsequently, campaignswere conducted in this locality by several paleontologists, including Villarroel, Anaya, Saint-André, and by our team over thelast decade. Recently, we have obtained two precise absolute dates (40Ar/39Ar) on feldspar contained in ashes intercalatedbetween fossiliferous levels and confirmed a late Miocene age (10.35±0.07 Ma and 10.42±0.09 Ma, late Mayoan–earlyChasicoan South American Land Mammal Ages) as suggested by Marshall and colleagues in 1983. Almost all the specimenscome from the Cerros Virgen Pata and Jiska/Jacha Pisakeri localities, the latter located 3–4 km southeast of Achiri village.In the past, discoveries of numerous spectacular specimens have allowed the identification of new mammalian speciessuch as the notoungulates Plesiotypotherium achirense and Hoffstetterius imperator, the sparassodontan Borhyaenidiumaltiplanicum, and the xenarthrans Trachycalyptoides achirense and Xyophorus villarroeli. Xyophorus was erected by Ameghinoin 1887 on the basis of a dentary fragment from the lower Miocene Santa Cruz Formation (Argentina). This taxon is generallyconsidered to be a nothrotheriid sloth (although has never been formally included in a phylogenetic analysis based onosteological characters). Six species are recognized in Argentina. This genus is also recorded in Achiri through the endemicspecies X. villarroeli, and also in Cerdas and Quebrada Honda through X. cf. bondesioi. Unfortunately, all the specimensreferred to Xyophorus are extremely fragmentary. Here we present a partial skull (MNHN-Bol-V 12690, National Museumof Natural History, La Paz, Bolivia) discovered in Achiri, belonging to an adult, and referred as “Xyophorus” ... |
| نوع الوثيقة: |
conference object |
| اللغة: |
English |
| الاتاحة: |
https://hal.umontpellier.fr/hal-03446957 |
| رقم الانضمام: |
edsbas.457A2D40 |
| قاعدة البيانات: |
BASE |