Articular and vertebral lesions in the Pleistocene sloths (Xenarthra, Folivora) from the Brazilian Intertropical Region

Barbosa, Fernando Henrique de Souza; Porpino, Kleberson de Oliveira; Araújo‐Júnior, Hermínio Ismael de; Bergqvist, Lílian Paglarelli; Rothschild, Bruce M.

doi:10.1080/08912963.2017.1376191

Cited by 12 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, Xenarthra's diseases started to be a key aspect to describe the ecological features of this Magnorder (e.g., Luna & Barbosa, 2014;Barbosa et al, 2014aBarbosa et al, , 2014bBarbosa et al, , 2017Barbosa et al, , 2019Acuña Suárez et al, 2019;Andrade et al, 2019;among others). Therefore, paleopathological analyses are a relatively new and alternative approach for disentangling paleoecological issues of this enigmatic species.…”

Section: Resumen Paleopatologías En Clavículas Del Perezoso Gigantementioning

confidence: 99%

“…Consequently, some type of arthritis (including also spondyloarthropathy) might have affected this bone (Rothschild & Martin, 2006;Luna & Barbosa, 2014;Barbosa et al, 2019), specifically the "osteochondral unit" (Oláh & Madry, 2018) in the form of micro-injuries that produce sclerotic bone, and might have also affected the cortical of the subclavian groove. This remodeling might be related to the fact that in extant and extinct sloths this process is continual (Straehl et al, 2013); nevertheless, the structure seen in this section is not extended into other parts of the clavicle.…”

Section: Mnhn-f-pam 765mentioning

confidence: 99%

“…The location of the lesion only on the posterior face of the ac joint where cartilage is dominant also weakens the possibility that the overgrowth is associated with some type of infection. In fact, the presence of osteophytes indicates osteoarthritis (Rothschild & Martin, 2006;Gancarczyk & Ahmad, 2014;Oláh & Madry, 2018) even though this disease might not be common in Xenarthra, and it can be a complication of spondyloarthropathy (Barbosa et al, 2017(Barbosa et al, , 2019. The internal cyst (differently 20 positioned from MHNG GEPI V4225, given they are in the subchondral bone) might be related to subchondral bone cysts associated with osteoarthritis (Oláh & Madry, 2018).…”

Section: Mnhn-f-pam 765mentioning

confidence: 99%

See 2 more Smart Citations

Paleopathologies of the Clavicles of the Giant Ground Sloth Megatherium americanum (Mammalia, Xenarthra) from the Pleistocene of the Pampean Region (Argentina)

et al. 2022

View full text Add to dashboard Cite

Section: Resumen Paleopatologías En Clavículas Del Perezoso Gigantementioning

confidence: 99%

Section: Mnhn-f-pam 765mentioning

confidence: 99%

Section: Mnhn-f-pam 765mentioning

confidence: 99%

See 1 more Smart Citation

Paleopathologies of the Clavicles of the Giant Ground Sloth Megatherium americanum (Mammalia, Xenarthra) from the Pleistocene of the Pampean Region (Argentina)

et al. 2022

View full text Add to dashboard Cite

“…The observed postcranial pathologies are frequent in large and megamammals, including extinct Folivora 43,44,46,47 . As it is mentioned previously 45 , particularly in the case of the vertebrae, these pathologies are compatible with individuals of advanced age and a huge body mass.…”

Section: Osteopathological Interpretationmentioning

confidence: 99%

Gregariousness in the giant sloth Lestodon (Xenarthra): multi-proxy approach of a bonebed from the Last Maximum Glacial of Argentine Pampas

Tomassini

Montalvo

Garrone

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Megamammals constituted an important component in the pleistocene faunal communities of South America. Paleobiological and paleoecological studies involving different megamammal taxa have increased significantly in the last years, but there are still several poorly-known issues of its life history. In this work, we analyze an assemblage composed of 13 individuals of different ontogenetic stages, and possibly different sex, belonging to the giant ground sloth Lestodon armatus (Xenarthra, folivora), recovered from playa del Barco site (pampean Region, Argentina). A dating of 19,849 years Cal BP allows assigning this assemblage to a period of the MIS (Marine Isotope Stage) 2 related to the end of the Last Glacial Maximum. Based on multiple lines of research (e.g. taphonomy, paleopathology, osteohistology, isotopy), we interpret the origin of the assemblage and diverse paleobiological and paleoecological aspects (e.g. social behavior, ontogenetic changes, sexual dimorphism, diseases, resource and habitat use, trophic relationships) of L. armatus. evidence suggests that the assemblage was formed by a local single event of catastrophic mortality, which affected different members of a social group. This record represents the first accurate evidence of gregariousness for this ground sloth, providing new data on a poorly-known behavior among extinct folivora. In the last years there have been multiple studies on the Quaternary South American megamammals (estimated body mass ≥ 1,000 kg), including ground sloths 1-8 (and references therein). Even so, there are several aspects of their life history that have not been addressed in detail, such as growth patterns, diseases, social behavior, habitat preference, feeding strategies, and trophic relationships with other mammals, both endemic to South America and immigrants from North America. Sloths (Xenarthra, Folivora), one of the most conspicuous groups of mammals, include representatives of, at least, five monophyletic families, Bradypodidae, Megalonychidae, Megatheriidae † , Mylodontidae † , and Nothrotheriidae †9,10. Representatives of this clade were very abundant and diverse in the Quaternary terrestrial

show abstract

“…Identification of pathological conditions in Quaternary mammals from South America is rare, with some cases published, especially regarding extinct ground sloths (e.g. Barbosa et al 2017Barbosa et al , 2019Andrade et al 2019;Tambusso et al 2020). For Nothrotherium maquinense, currently, there is skeletal evidence of spondyloarthropathy, Schmorl's node, vertebral trauma and infection (Barbosa et al 2017).…”

Section: General Considerationsmentioning

confidence: 99%

First cancer in an extinct Quaternary non-human mammal

et al. 2020

Self Cite

View full text Add to dashboard Cite

Here we report a parosteal osteosarcoma, a malignant bone neoplasm, in a right femur assigned to the Quaternary ground sloth Nothrotherium maquinense. The specimen was collected at Lapa dos Peixes I, a cave located at Serra do Ramalho plateau, Bahia, Brazil. The diagnosis was based on the macroscopic, radiologic and histologic appearance of the lesion. The presence of this pathology may indicate that the individual suffered from local pain, localised swelling and limitation of joint movement, which would have been extremely harmful for its life. Even though neoplasms are recognised in almost all metazoans, this is the first case of cancer reported for a Quaternary non-human mammal and appears to be the first report of this specific form of bone cancer in the fossil record.

show abstract

Articular and vertebral lesions in the Pleistocene sloths (Xenarthra, Folivora) from the Brazilian Intertropical Region

Cited by 12 publications

References 29 publications

Paleopathologies of the Clavicles of the Giant Ground Sloth Megatherium americanum (Mammalia, Xenarthra) from the Pleistocene of the Pampean Region (Argentina)

Paleopathologies of the Clavicles of the Giant Ground Sloth Megatherium americanum (Mammalia, Xenarthra) from the Pleistocene of the Pampean Region (Argentina)

Gregariousness in the giant sloth Lestodon (Xenarthra): multi-proxy approach of a bonebed from the Last Maximum Glacial of Argentine Pampas

First cancer in an extinct Quaternary non-human mammal

Contact Info

Product

Resources

About