BIOLOGIA SUBTERRÂNEA
URI permanente para esta coleçãohttps://bdc.icmbio.gov.br/handle/cecav/3
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Item The paleoichnofauna in bones of Brazilian Quaternary cave deposits and the proposition of two new ichnotaxa(2023-10-22) Trifilio, Lucas Henrique Medeiros da Silva; Araújo Júnior, Hermínio Ismael de; Porpino, Kleberson de OliveiraThe Quaternary vertebrate paleontology of the Brazilian Intertropical Region is well-known, but there are only a few publications on bone ichnology. In this paper, we analyzed trace fossils in 23 bones of the Gruna das Três Cobras, Complexo Suíço, and F3 caves, which are located in Bahia and Rio Grande do Norte states, in the Brazilian Intertropical Region. We discovered gnaw marks assigned to Machichnus and bite marks attributed to Nihilichnus, as well as insect modifications referring to single (Cuniculichnus, Gunnellichnus, Karethraichnus, and Osteocallis) and multiple behaviors (Munitusichnus, and Taotieichnus). Additionally, we proposed the new ichnospecies Nihilichnus sulcatus n. isp. (bite mark) and Cuniculichnus cascudoi n. isp. (insect feeding mark). Regarding the predation/scavenger marks, Protocyon troglodytes was the probable primary modification agent, but some traces may also be attributed to Smilodon populator and Caiman latirostris. Cuniculichnus, Karethraichnus, Munitusichnus, and Osteocallis are attributed to dermestids, whereas termites probably produced Gunnelichnus and Taotieichnus.Item CINGULATA OF THE ABISMO PONTA DE FLECHA CAVE (PLEISTOCENE-HOLOCENE), RIBEIRA DE IGUAPE VALLEY, SOUTHEASTERN BRAZI(2022) CHAHUD, ARTUR; COSTA, PAULO RICARDO DE OLIVEIRA; OKUMURA, MERCEDESThe Ribeira de Iguape Valley, located in southeastern Brazil, is an important karstic region, presenting a large number of caves containing fossil and subfossil vertebrate materials. The Abismo Ponta de Flecha Cave is a complex vertical cave divided into galleries where a large amount of osteological material was collected. The cave acted as a natural trap for several taxa and possibly as a disposal site for ancient human communities. Osteoderms and appendicular bones assigned to two genera of Cingulata were identified in the faunal assemblage. The most abundant bone material belongs to the family Chlamyphoridae, genus Cabassous, represented by the living species C. tatouay and by remains of a larger, but little-known species, cf. C. antiquus. The other identified genus belongs to the family Dasypodidae: Dasypus sp. Evidence of human activity was characterized in only one C. tatouay bone, while the other specimens were considered as being of natural origin.