Middle Maastrichtian vertebrates (fishes, amphibians, dinosaurs and other reptiles, mammals) from Pajcha Pata (Bolivia). Biostratigraphic, palaeoecologic and palaeobiogeographic implications

Hibernation in an Antarctic Fish: On Ice for Winter

“…We accept the widely held hypothesis of a South American origin for Astyanax and other Central American characids [15,30,33]. This is supported by the observation that Lower Central America lineages were most closely related to South American samples from Brazil and Argentina.…”

“…Characiforms are generally assumed to have a Gondwanan (South American) origin [30][31][32], as supported by the fossil record [33], so the presence of Characidae in Northern America is viewed as a consequence of dispersal.…”

Revision of Habrosaurus Gilmore (Caudata; Sirenidae) and relationships among sirenid salamanders

“…In my opinion many of the resemblances listed by Evans et al (1996) between Kababisha and unequivocal sirenids are not unique to sirenids, are of uncertain polarities or homologies, or, at best, appear to only approach the condition in sirenids. This is also the case for sirenid-like features in trunk vertebrae reported by Rage et al (1993) and Gayet et al (2001) for Noterpeton. Other features of the Gondwanan genera, notably the procoelous-like vertebrae, lack of the premaxillary pars dorsalis and the unique symphyseal dentary tooth in Kababisha and the procoelous vertebrae of Noterpeton ( jaws are undescribed for Noterpeton), differ substantially from all other caudates, including sirenids.…”

Reptiles Extintos - Volumen en Homenaje a Zulma Gasparini

“…(Hoffstetter, 1963(Hoffstetter, , 1968Chani, 1976;Estes, 1983;Sullivan y Estes, 1997;Ubilla y Perea, 1999;Brizuela y Albino, 2004, 2008a,b, 2012aAlbino et al, 2006Albino et al, , 2013Pujos et al, 2009;Brizuela, 2010;Bolet y Evans, 2011 (Ameghino, 1893;Rovereto, 1914;Kraglievich, 1947;Hsiou, 2007), pero estudios recientes no han logrado sostener la validez de las mismas (Brizuela, 2010;Brizuela y Albino, 2008a, 2012b (Hoffstetter, 1970;Estes, 1983;de Queiroz, 2004;Albino, 2005;Camolez y Zaher, 2010;Hsiou et al, 2012;Brizuela y Cruz, 2013 (Albino, 1986(Albino, , 1994(Albino, , 1996a(Albino, , 2000(Albino, , 2007(Albino, , 2011Apesteguía y Zaher, 2006;Gómez et al, 2008;Zaher et al, 2009;Albino y Brizuela, 2014a). Además, en Brasil se ha reconocido una serpiente primitiva de relaciones inciertas, Seismophis septentrionalis (Hsiou et al, 2014), mientras que en Bolivia se ha recuperado un posible madtsoideo (Gayet et al, 2001).…”