The oldest record of bone diseases in Xenarthra (Mammalia)

Paleopathological studies are a useful tool for paleobiological and paleoecological interpretations in different extinct vertebrate clades. The Xenarthra are one of the groups of fossil mammals that has received the most attention regarding these type of analyzes in the last years. However, all path...

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Autores principales: Luna, Carlos Alberto, Barbosa, Fernando H. S., Quiñones, Sofía I., Miño Boilini, Ángel Ramón, Zurita, Alfredo Eduardo, Cuaranta, Pedro
Formato: Jornada
Lenguaje:Español
Publicado: Asociación Paleontológica Argentina 2025
Materias:
Xenarthra
Bone diseases
Fossil mammals
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/57257
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-57257
record_format dspace
spelling I48-R184-123456789-572572025-08-14T10:26:47Z The oldest record of bone diseases in Xenarthra (Mammalia) Luna, Carlos Alberto Barbosa, Fernando H. S. Quiñones, Sofía I. Miño Boilini, Ángel Ramón Zurita, Alfredo Eduardo Cuaranta, Pedro Xenarthra Bone diseases Fossil mammals Paleopathological studies are a useful tool for paleobiological and paleoecological interpretations in different extinct vertebrate clades. The Xenarthra are one of the groups of fossil mammals that has received the most attention regarding these type of analyzes in the last years. However, all pathological records are restricted to the Quaternary sloths and glyptodonts of South America. In this contribution we present different articular and vertebral lesions in three specimens of Simomylodon Saint-André et al., 2010 (Mylodontidae) from the Late Miocene-Pliocene of Jujuy province (northwestern Argentina). Although each individual show lesions in different degree, they present the same types of bones changes. The non-marginal syndesmophyte on the axis/third cervical vertebrae (JUY-P-084) and on sacral vertebrae (JUY-P-185), marginal bone overgrowth and peripheral joint erosion on the lateral and medial condyle in the femur (JUY-P-185) and articulate surface for tibia of the astragalus (JUY-P-089) are diagnostic of spondyloarthropathy (SpA). The presence of calcified plate-like on the joint surfaces of the vertebrae of all individuals indicates the secondary development of Calcium Pyrophosphate Deposition Disease (CPPD), a type of inflammatory, mechanical and crystalline arthritis, probably as a complication of SpA. On the other hand, osteophytes on the edges of vertebral endplates are indicative of spondylosis deformans, an aging condition. These lesions correspond to the oldest record of pathologies in sloths, and in xenarthrans in general. Finally, it is noteworthy that all specimens are adults having different body sizes, indicating that the development of these diseases seems to be unrelated to the weight of these mammals. *Financiamietno: PICT 0765, PI Q002. 2025-08-13T15:32:53Z 2025-08-13T15:32:53Z 2019-05-29 Jornada Luna, Carlos Alberto, et al., 2019. The oldest record of bone diseases in Xenarthra (Mammalia). En: 33as Jornadas Argentinas de Paleontología de Vertebrados. Ciudad autónoma de Buenos Aires: Asociación Paleontológica Argentina, p. 1-1. 2469-0228 http://repositorio.unne.edu.ar/handle/123456789/57257 spa https://peapaleontologica.org.ar/index.php/peapa/article/view/307 openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 1-1 application/pdf Asociación Paleontológica Argentina
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Español
topic Xenarthra
Bone diseases
Fossil mammals
spellingShingle Xenarthra
Bone diseases
Fossil mammals
Luna, Carlos Alberto
Barbosa, Fernando H. S.
Quiñones, Sofía I.
Miño Boilini, Ángel Ramón
Zurita, Alfredo Eduardo
Cuaranta, Pedro
The oldest record of bone diseases in Xenarthra (Mammalia)
topic_facet Xenarthra
Bone diseases
Fossil mammals
description Paleopathological studies are a useful tool for paleobiological and paleoecological interpretations in different extinct vertebrate clades. The Xenarthra are one of the groups of fossil mammals that has received the most attention regarding these type of analyzes in the last years. However, all pathological records are restricted to the Quaternary sloths and glyptodonts of South America. In this contribution we present different articular and vertebral lesions in three specimens of Simomylodon Saint-André et al., 2010 (Mylodontidae) from the Late Miocene-Pliocene of Jujuy province (northwestern Argentina). Although each individual show lesions in different degree, they present the same types of bones changes. The non-marginal syndesmophyte on the axis/third cervical vertebrae (JUY-P-084) and on sacral vertebrae (JUY-P-185), marginal bone overgrowth and peripheral joint erosion on the lateral and medial condyle in the femur (JUY-P-185) and articulate surface for tibia of the astragalus (JUY-P-089) are diagnostic of spondyloarthropathy (SpA). The presence of calcified plate-like on the joint surfaces of the vertebrae of all individuals indicates the secondary development of Calcium Pyrophosphate Deposition Disease (CPPD), a type of inflammatory, mechanical and crystalline arthritis, probably as a complication of SpA. On the other hand, osteophytes on the edges of vertebral endplates are indicative of spondylosis deformans, an aging condition. These lesions correspond to the oldest record of pathologies in sloths, and in xenarthrans in general. Finally, it is noteworthy that all specimens are adults having different body sizes, indicating that the development of these diseases seems to be unrelated to the weight of these mammals. *Financiamietno: PICT 0765, PI Q002.
format Jornada
author Luna, Carlos Alberto
Barbosa, Fernando H. S.
Quiñones, Sofía I.
Miño Boilini, Ángel Ramón
Zurita, Alfredo Eduardo
Cuaranta, Pedro
author_facet Luna, Carlos Alberto
Barbosa, Fernando H. S.
Quiñones, Sofía I.
Miño Boilini, Ángel Ramón
Zurita, Alfredo Eduardo
Cuaranta, Pedro
author_sort Luna, Carlos Alberto
title The oldest record of bone diseases in Xenarthra (Mammalia)
title_short The oldest record of bone diseases in Xenarthra (Mammalia)
title_full The oldest record of bone diseases in Xenarthra (Mammalia)
title_fullStr The oldest record of bone diseases in Xenarthra (Mammalia)
title_full_unstemmed The oldest record of bone diseases in Xenarthra (Mammalia)
title_sort oldest record of bone diseases in xenarthra (mammalia)
publisher Asociación Paleontológica Argentina
publishDate 2025
url http://repositorio.unne.edu.ar/handle/123456789/57257
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