| Texto completo | |
| Autor(es): |
Neto, Donato J. Martucci
;
Hsiou, Annie Schmaltz
;
Guilherme, Edson
;
Costa, Leonardo A. T.
;
Ferreira, Gabriel S.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of South American Earth Sciences; v. 155, p. 14-pg., 2025-04-01. |
| Resumo | |
The Solimoes Formation, in the Acre Basin, which outcrops between the states of Acre and Amazonas, northern Brazil, contains the country's most diverse fossil fauna of Neogene amniotes. The outcrops are mainly found on the erosive margins of the Purus, Acre, and Jurua<acute accent> rivers, among others, since the 19th century. So far, as recorded in other Neogene deposits in northern South America, most of the fossil turtles of the Brazilian Amazon are represented mainly by the clades Chelidae, Podocnemididae, and Testudinidae. The genus Chelus (Chelidae) - popularly known as mata-mata -, represented by two extant species, Chelus fimbriata and Chelus orinocensis, traditionally also includes two extinct species: Chelus colombiana and Chelus lewisi. In Brazil, fossils attributed to the genus Chelus have been reported since the late 19th century. Still, the first valid identifications were made in the 1980s and 1990s, and later in the 2000s, with the proposed presence of C. colombiana and C. lewisi observed in Miocene strata of the Brazilian Amazon. Here, we describe recently discovered fossils housed at the Laborato<acute accent>rio de Pesquisas Paleontolo<acute accent>gicas at the Universidade Federal do Acre (Campus Rio Branco) and assign them to Chelus. Our comparative analyses show that features traditionally and recently used to diagnose the two extinct taxa are present in the same individual. This overlap leads us to question the consistency of these characteristics and consequently the validity of C. lewisi. (AU) | |
| Processo FAPESP: | 21/13200-4 - Novos fósseis do gênero Chelus (Testudines, Chelidae) do Mioceno da Amazônia brasileira, Bacia do Acre, Brasil |
| Beneficiário: | Donato Jesus Martucci Neto |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |
| Processo FAPESP: | 19/14153-0 - A fauna de pequenos vertebrados do Neógeno da Amazônia Brasileira, com ênfase na resolução temporal da Formação Solimões, Mioceno da Bacia do Acre |
| Beneficiário: | Annie Schmaltz Hsiou |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |