Browsing by Author "Perini, Fernando A."
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Item On the supposed presence of Miocene Tayassuidae and Dromomerycinae (Mammalia, Cetartiodactyla) in South America. (American Museum novitates, no. 3968)(New York, NY : American Museum of Natural History, 2021-03-19) Gasparini, Germán M.; Dutra, Rodrigo Parisi; Perini, Fernando A.; Croft, Darin A.; Cozzuol, Mario A.; Missagia, Rafaela V.; Lucas, Spencer G.The earliest record of North American mammals in South America is significant for constraining the timing of intercontinental faunal interchange. At present, the oldest securely dated remains of a North American terrestrial mammal in South America pertain to a late Miocene procyonid; a few other North American mammal groups are present in late Miocene and early Pliocene outcrops in South America, but most are not recorded until the late Pliocene or Pleistocene, after the complete emergence of the Panamanian Isthmus. This long-established pattern has recently been called into question by reports of a proboscidean, two tayassuids, and a dromomerycine cervoid in supposed late Miocene deposits of Peruvian Amazon. In this contribution, we analyze the taxonomic identities and stratigraphic provenances of the tayassuid and dromomerycine fossils in detail. We conclude that these specimens are not distinguishable from modern tayassuids (Tayassu pecari and Dicotyles tajacu) and cervids, and that previous taxonomic identifications are based on misinterpretation of characters or inadequate specimens. In addition, there is insufficient evidence to support a late Miocene age for these terrestrial cetartiodactyl fossils; the stratigraphic provenance of the specimens is highly dubious, and the fossils are likely Quaternary in age.Item Quaternary bats from the Impossível-Ioiô cave cystem (Chapada Diamantina, Brazil) : humeral remains and the first fossil record of Noctilio leporinus (Chiroptera, Noctilionidae) from South America. (American Museum novitates, no. 3798)(American Museum of Natural History., 2014-04-04) Salles, Leandro O. (Leandro Oliveira); Arroyo-Cabrales, Joaquín.; Monte Lima, Anne Caruliny do.; Lanzelotti, Wagner.; Perini, Fernando A.; Velazco, Paúl M.; Simmons, Nancy B.The partially submerged Impossível-Ioiô cave system located in the karst region of Chapada Diamantina in Bahia (Brazil) has recently been the target of extensive paleontological studies. Here we provide the first report of fossil bats from this cave system, in which we recognize six species based on humeral remains: Furipterus horrens, Chrotopterus auritus, Mormoops cf. megalophylla, Pteronotus gymnonotus, Pteronotus parnellii, and Noctilio leporinus. Morphology of the humerus of these taxa is described in a comparative framework to document taxonomic assessments and provide a basis for future studies of fossil bat faunas. The relevance of the new records reported here is evaluated at a broader continental scale, as well as in contrast with the recent bat fauna of the region. The record of Noctilio leporinus stands as the first fossil occurrence of this species on the South American continent.