Ocorrência da Ordem Cingulata (Tatus) no pleistoceno do estado de Alagoas

Abstract

Despite being the second smallest Brazilian state, Alagoas has a significant occurrence of fossiliferous deposits, the most significant deposits are those related to the megafauna of the Quaternary period of the Cenozoic Era, the Pleistocene. The analyzed material consists of 175 fossil specimens, collected between the years 2011 to 2019, and later deposited in the paleovertebrate collection of the Paleontology Sector of the Natural History Museum of the Federal University of Alagoas (SP-MHNUFAL). The study consisted of collecting and processing the data contained in the register book of the collection. Five cingulate paleomammal taxa were identified in fossiliferous assemblages: Glyptodontids: Glyptotherium sp. and Panochthus sp .; the pampaterids: Pampatherium humboldti and Holmesina paulacutoi; and the Dasypodidae: Tolypeutes tricinctus. Of the 24 municipalities with fossil occurrences of Pleistocene mammals, identified and georeferenced by SP-MHN-UFAL, only four of these registered fossil specimens of the Cingulata Order: Delmiro Gouveia, Inhapi, Ouro Branco and São José da Tapera. In agreement with other works in the semiarid region of Alagoas, the paleoenvironmental interpretation of the region in the Pleistocene was of open environments and typical of savannas, which resemble the Brazilian cerrados. This serves as a contribution to the interpretation of the Pleistocene paleoenvironment and it is necessary to expand the study of the semiarid region of Alagoas for a greater collection of information about its paleoenvironment.