Navegando por Assunto "Taphonomy"

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Artigo
Mammal Taphonomy in a Cave Deposit From Quaternary of Brazil
(2022-03-03) Trifilio, Lucas Henrique Medeiros da Silva; de Araújo-Júnior, Hermínio Ismael; Porpino, Kleberson de Oliveira; Barbosa, Fernando Henrique de Souza
In Brazil, the Quaternary caves of the Brazilian Intertropical Region (BIR) host important fossiliferous deposits of terrestrial vertebrates, whose fossil content is taxonomically well known. Here, we conducted a taphonomic analysis based on macroscopic and microscopic features of 543 specimens collected in the F3 cave, a fossiliferous deposit located in the municipality of Baraúna, northeast of Brazil. This deposit encompasses 17 taxa, but it is dominated by fossils of Eremotherium laurillardi. Most bones were buried in less than a year, but the taphonomic history of this deposit was governed by alternation of dry and wet cycles. This led us to recognize four taphonomic modes, that differ according to the climatic conditions in which the bones were preserved as well as the time interval between the accumulation and the final burial of the remains.
Artigo
The presence of Panthera onca Linnaeus 1758 (Felidae) in the Pleistocene of the region of Lagoa Santa, State of Minas Gerais, Brazil
(2020-08-19) Chahud, Artur; Okumura, Mercedes
The region of Lagoa Santa, State of Minas Gerais (Brazil) presents an important karst complex that includes several caves with a large amount of osteological material. Among the places of great palaeontological importance is the Cuvieri Cave, known for the diversity of extinct and extant animal species, including large cats. The Felidae emerged in South America during the Great American Biotic Interchange, and in a short period, they became the main predators of the region, with considerable osteological record. Currently, Panthera onca is the main carnivore in Neotropical America, even so Pleistocene specimens are little known or studied. An adult specimen, represented by teeth, small appendicular bones (calcaneus, astragalus, phalanges, metacarpals and metatarsals) and fragmented larger bones (ulna, femur and tibia), of Pleistocene age found in the Cuvieri Cave is presented here, providing anatomical and preservation data, adding information about this species in the Brazilian Quaternary.