Theropod teeth from the Adamantina Formation (Bauru Group, Upper Cretaceous), Monte Alto, São Paulo, Brazil

Cretaceous Blind Snake from Brazil Fills Major Gap in Snake Evolution

“…The fossil comes from a rural road between the municipalities of Monte Alto and Taiaçu, in the Northwest of the state of São Paulo, Brazil ( Figure 1 B) (S21° O9′53.9″/W48°29′54.0″). The outcrop bearing the new material is a rich fossiliferous locality that preserves an abundant fauna including crocodyliforms ( Carvalho et al., 2007 ; Iori and de Souza Carvalho, 2009 ; Iori and Carvalho, 2011 ; Iori and Garcia, 2012 ; Iori et al., 2013 ; Iori and Campos, 2017 ), testudines ( Ferreira et al., 2018 ), and dinosaurs such as sauropods and non-avian theropods ( Méndez et al., 2014 ; Santucci and Arruda-Campos, 2011 ; Tavares et al., 2014 ). The sediments in the outcrop consist of the typical reddish muddy sandstones of the Adamantina Formation (Bauru Basin) found in the Monte Alto region ( Batezelli, 2017 ).…”

The distribution of dental features in non-avian theropod dinosaurs: Taxonomic potential, degree of homoplasy, and major evolutionary trends

“…Teeth, and particularly tooth enamel, are robust skeletal elements (Hillson, 2005), and most toothed theropods had 50 or more teeth that were replaced every one to two years (Fiorillo and Currie, 1994;Erickson, 1996). Consequently, theropod teeth are one of the most common fossils in terrestrial Mesozoic formations (e.g., Erickson, 1996;Smith et al, 2005;Blob and Badgley, 2007) and are constantly reported in the literature (e.g., Currie et al, 1990;Rauhut and Werner, 1995;Baszio, 1997;Zinke, 1998;Sankey et al, 2002;Sweetman, 2004;Maganuco et al, 2005;Vullo et al, 2007;Larson, 2008;Casal et al, 2009;Lubbe et al, 2009;Ősi et al, 2010;Han et al, 2011;Sues and Averianov, 2013;Larson and Currie, 2013;Richter et al, 2013;Torices et al, 2015;Kear et al, 2013;Madzia, 2014;Hendrickx and Mateus, 2014a;Cobos et al, 2014;Tavares et al, 2014;Fanti et al, 2014;Brusatte and Clark, 2015;Csiki-Sava et al, 2016;Gerke and Wings, 2016;Alonso et al, 2017;Malafaia et al, 2017a;Avrahami et al, 2018;Frederickson et al, 2018;…”

New occurrences of fossilized feathers: systematics and taphonomy of the Santana Formation of the Araripe Basin (Cretaceous), NE, Brazil

“…Generally these sediments are related to high energetic depositional systems, with unidirectional flows, such as rivers and streams ( Behrensmeyer , 1982 ; Behrensmeyer , 1988 ; Holz & Simões , 2002 ). Several evidences of Cretaceous enanthionithines and maniraptorans were found in sandstones of tidal, fluvial and flood plain deposits of Paraná Basin and São Luis-Grajaú Basin ( Carvalho & Pedrão , 1998 ; Alvarenga & Nava , 2005 ; Novas, Ribeiro & Carvalho , 2005 ; Azevedo et al , 2007 ; Elias, Bertini & Medeiros , 2007 ; Machado, Campos & Kellner , 2008 ; Candeiro et al , 2012a ; Candeiro et al , 2012b ; Marsola et al , 2014 ; Tavares, Branco & Santucci , 2014 ; Delcourt & Grillo , 2015 ). However, with the exception of Cratoavis cearensis which was found in the carbonates of the lacustrine Crato Member of Araripe Basin ( Carvalho et al , 2015a ; Carvalho et al , 2015b ), no other feathered dinosaurs were found in these deposits.…”