New Cingulata (Mammalia, Xenarthra) from the Upper Lumbrera Formation (Bartonian, middle Eocene), Salta Province, Argentina

Authors

  • Claudia Herrera Instituto Superior de Correlación Geológica (INSUGEO), Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán. Miguel Lillo 205, 4000, Tucumán, Argentina.
  • Graciela Esteban Instituto Superior de Correlación Geológica (INSUGEO), Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán. Miguel Lillo 205, 4000, Tucumán, Argentina.
  • Daniel Alfredo Garcia-Lopez INSUGEO (CONICET-UNT), Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán. Miguel Lillo 205, 4000, Tucumán, Argentina.
  • Virginia Deraco INSUGEO (CONICET-UNT), Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán. Miguel Lillo 205, 4000, Tucumán, Argentina.
  • Judith Babot Centro de Investigaciones en Ecología Histórica (CONICET-UNT), Fundación Miguel Lillo. Miguel Lillo 251, 4000, Tucumán, Argentina.
  • Cecilia del Papa CICTERRA-F.C.E.F y N., CONICET-Universidad Nacional de Córdoba, X5016GCA Córdoba, Argentina.
  • Sara Bertelli Unidad Ejecutora Lillo (CONICET- Fundación Miguel Lillo). Miguel Lillo 251, 4000, Tucumán, Argentina.
  • Norberto Giannini Unidad Ejecutora Lillo (CONICET- Fundación Miguel Lillo). Miguel Lillo 251, 4000, Tucumán, Argentina.

DOI:

https://doi.org/10.4072/rbp.2021.3.05

Abstract

We describe isolated remains of a Paleogene cingulate from El Simbolar locality, Upper Lumbrera Formation (Bartonian),
southern Salta Province, northwestern Argentina. The material consists of numerous fixed, movable, and caudal sheath osteoderms. The specimen has large-sized osteoderms, with a lageniform main figure, as in Utaetus buccatus, U. laxus, U. argos, ?U. deustus, Punatherium catamarcensis, and the basal euphractin Archaeutatus. The combination of morphological characters, in addition to its large size, allows us to recognize a new species of “Utaetini” for the Paleogene of northwestern Argentina. This new species of ?Utaetus represents the oldest record of Euphractinae in this region, and strengthens the endemic condition of its Paleogene faunas.

Keywords: Cingulata, osteoderms, El Simbolar, Paleogene, Salta, Argentina.


RESUMO – Nós descrevemos restos isolados de cingulado do Paleógeno da localidade de El Simbolar, Formação Lumbrera Superior (Bartoniano), sul da Província de Salta, noroeste da Argentina. O material consiste em numerosos osteodermos das bandas fixas, móveis e caudais. Os osteodermos têm tamanho grande, com uma figura principal de aspecto lageniforme, como em Utaetus buccatus, U. laxus, U. argos, ?U. deustus, Punatherium catamarcensis, e o eufractino basal Archaeutatus. A combinação de caracteres morfológicos, em adição ao seu grande tamanho, nos permite reconhecer uma nova espécie de “Utaetini” para o Paleógeno do noroeste da Argentina. Esta nova espécie de ?Utaetus representa o registro mais antigo para Euphractinae nesta região e fortalece a condição endêmica das faunas paleógenas no noroeste da Argentina.

Palavras-chave: Cingulata, osteodermos, El Simbolar, Paleógeno, Salta, Argentina.

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Published

2021-09-26

How to Cite

Herrera, C., Esteban, G., Garcia-Lopez, D. A., Deraco, V. ., Babot, J., del Papa, C., Bertelli, S., & Giannini, N. (2021). New Cingulata (Mammalia, Xenarthra) from the Upper Lumbrera Formation (Bartonian, middle Eocene), Salta Province, Argentina. Revista Brasileira De Paleontologia, 24(3), 236–244. https://doi.org/10.4072/rbp.2021.3.05

Issue

Vol. 24 No. 3 (2021): Revista Brasileira de Paleontologia

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Articles

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