Produção Nacional
Revisado por pares
New outcrop with vertebrate remains from Solimões Formation (Eocene–Pliocene), Southern Solimões Basin, Acre State, Northern Brazil
2020; Elsevier BV; Volume: 101; Linguagem: Inglês
10.1016/j.jsames.2020.102588
ISSN1873-0647
AutoresMauro B.S. Lacerda, Rafael Gomes de Souza, Leonardo Souza Lobo, Carlos Ernesto Gonçalves Reynaud Schaefer, Pedro S. R. Romano,
Tópico(s)Paleontology and Evolutionary Biology
ResumoHere we describe fossil vertebrate remains from a new Solimões Formation (Eocene-Pliocene) locality, near the highway BR 364 at Sena Madureira municipality (Acre, Brazil). The findings comprise more than forty-four isolated fragments from which twenty-three specimens could be properly identified anatomically and systematically. The materials include at least three different Caimaninae genera (Caiman, Melanosuchus, and Mourasuchus), two distinct side-necked turtles (Chelus and Podocnemididae) and one mammal (Toxodontidae). The studied fossils could be systematized into two taphonomic classes based on their preservational status, indicating a sinuous fluvial meandering paleoenvironment. This new locality seems to be relevant regarding not only its fossil vertebrate diversity but also because of its geographic position: on a highway side, which allows access at any season of the year, as contrary to most common riverine outcrops from Solimões Formation, which are restricted to collections during the dry seasons.
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