Overlapping paleoichnology, paleoecology and taphonomy: Analysis of tooth traces in a Late Pleistocene-early Holocene megafaunal assemblage of Brazil and description of a new ichnotaxon in hard substrate

Mammal Taphonomy in a Cave Deposit From Quaternary of Brazil

“…The F3 cave occurs in a calcareous cave system of the Lajedo da Escada Site (LES; Carvalho et al, 1966), which was developed in rocks from the Upper Cretaceous Jandaíra Formation (Apodi Group, Potiguar Basin;Carvalho, 1966;Araripe and Feijó, 1994;Pessoa-Neto et al, 2007). During the Pleistocene, outcrops of the Jandaíra Formation suffered an intense process of karstification, which generated many underground geomorphologies (Araújo-Júnior et al, 2017a).…”

“…Among the five caves explored, F3 cave has the most abundant fossil content and was the only one submitted to a controlled fossil collection. It was initially explored during 1960's only under the taxonomic considerations (e.g., Carvalho, 1966;Porpino et al, 2009;Araújo-Júnior and Porpino, 2011), and more recently in paleopathological (Barbosa, 2013;Barbosa et al, 2014) and ichnological points of view (Araújo-Júnior et al, 2017a).…”

“…However, despite this huge number of recorded cavities, fossils have been recovered from only a few of them (see Cartelle, 2012). Likewise, taphonomic analyses of fossils recovered from several Brazilian caves are scarce (e.g., Auler et al, 2006;Gasparini et al, 2015;Vasconcelos et al, 2015Vasconcelos et al, , 2018Maldonado et al, 2016;Araújo-Júnior et al, 2017a;Buchmann et al, 2017;Silva et al, 2019a), especially in comparison to tank deposits (see Araújo-Júnior et al, 2017b), another common type of deposit of the BIR.…”

Occurrence of the Ichnospecies Nihilichnus nihilicus Mikulás, Kadlecová, Fejfar Dvorák (2006) in Vertebra of Crocodylia from the Upper Miocene Solimões Formation, Acre Basin

“…Como orientado também por Pirrone et al (2014), não utilizamos a icnotaxobase "tipo de substrato" devido às suas aplicações problemáticas nos estudos icnológicos. Por fim, comparamos nosso resultado com outros icnotáxons relacionados a bioerosão em substrato ósseo afim de compreender os diferentes contextos de produção destes traços (Cruickshank, 1986;Thenius, 1988;Mikulás et al, 2006;Roberts et al, 2007;Jacobsen & Bromley, 2009;Muñiz et al, 2010;Araújo-Júnior et al, 2017).…”

Spinal fracture reveals an accident episode in Eremotherium laurillardi shedding light on the formation of a fossil assemblage

“…The natural world is a tough place, where wild animals need to constantly adapt to different biotic and abiotic conditions to survive. In past animals, evidences of this “fight for survival” can be revealed through different types of analyses of bones preserved in the fossil record (e.g., ichnologic 1 ; and isotopic 2 ). An interesting category of evidence about the daily life of ancient animals are bone trauma – any break in the bone continuity caused by a force or mechanism extrinsic to the body 3 .…”