Pampadromaeus barberenai

Pampadromaeus barberenai Cabreira, Schultz, Bittencourt, Soares, Fortier, Silva & Langer, 2011
Place: Santa Maria Formation, Alemoa Member;
Time: Late Triassic - Upper Carnian;
Size: 1,5m.
Etymology: . The generic name maximus means runner "from the Pampas", and specific name honours the Brazilian palaeontologist Mário C. Barberena.



New stem-sauropodomorph (Dinosauria, Saurischia) from the Triassic of Brazil
Sergio F. Cabreira, Cesar L. Schultz, Jonathas S. Bittencourt, Marina B. Soares and Daniel C. Fortier, et al.

Naturwissenschaften
DOI 10.1007/s00114-011-0858-0 Online First™, 14 November 2011
Abstract
Post-Triassic theropod, sauropodomorph, and ornithischian dinosaurs are readily recognized based on the set of traits that typically characterize each of these groups. On the contrary, most of the early members of those lineages lack such specializations, but share a range of generalized traits also seen in more basal dinosauromorphs. Here, we report on a new Late Triassic dinosaur from the Santa Maria Formation of Rio Grande do Sul, southern Brazil. The specimen comprises the disarticulated partial skeleton of a single individual, including most of the skull bones. Based on four phylogenetic analyses, the new dinosaur fits consistently on the sauropodomorph stem, but lacks several typical features of sauropodomorphs, showing dinosaur plesiomorphies together with some neotheropod traits. This is not an exception among basal dinosaurs, the early radiation of which is characterized by a mosaic pattern of character acquisition, resulting in the uncertain phylogenetic placement of various early members of the group.

Oxalaia quilombensis

Oxalaia quilombensis xx, 2011

Place: Alcântara Formation, Itapecuru Group, Parnaíba Basin, Itapecuru-Mirim, Maranhão State
Time: Cenomanian, Early Cretaceous;
Size: 14-15m;
Taxonomy: Theropoda, Tetanurae, Spinosauroidea, Spinosauridae.

KELLNER, Alexander WA. et al. A new dinosaur (Theropoda, Spinosauridae) from the Cretaceous (Cenomanian) Alcântara Formation, Cajual Island, Brazil. An. Acad. Bras. Ciênc. [online]. 2011, vol.83, n.1, pp. 99-108. ISSN 0001-3765.

A new spinosaurid taxon, Oxalaia quilombensis gen. et sp. nov., is described based on the anterior part of a snout and a fragment of a maxilla. These specimens were collected at the Laje do Coringa site, Late Cretaceous (Cenomanian) of the São Luis Basin. Unlike Cristatusaurus and Suchomimus, Oxalaia quilombensis lacks serrations on the teeth. The new species differs from Angaturama limai by having the anterior part of the premaxillae more expanded and by lacking a sagittal premaxillary crest. It further differs from Spinosaurus cf. S. aegyptiacus and the Algerian spinosaurid by the rounder shape of the terminal expansion. Furthermore, xalaia quilobensis has one functional tooth followed by two replacement teeth, a feature not previously observed in theropods. Oxalaia quilombensis appears to be more closely related to the spinosaurids found in North Africa than to the Brazilian members of this clade and thus further increases the diversity of these enigmatic predatory dinosaurs in this country.

Angaturama limai

Angaturama limai Kellner & Campos, 1996

Gondwanatitan faustoi

Gondwanatitan faustoi Kellner & Azevedo, 1999

Art: Yasuko Okamoto [1]


[1] Kellner, A.W.A., Schwanke, C. e Campos, D.A. O Brasil no tempo dos dinossauros , 1999), in http://cienciahoje.uol.com.br/4159
[2] Calvo, J.O.; González-Riga, B.J.; and Porfiri, J.D. (2007) "Muyelensaurus pecheni gen. et sp. nov., a new titanosaur sauropod from the Late Cretaceous of Neuquén, Patagonia, Argentina." Arquivos do Museu Nacional, Rio de Janeiro 65(4):485-504 PDF

Teyuwasu barbarenai

Teyuwasu barbarenai Kischlat, 1999

Place: Santa Maria Formation, Rio Grande do Sul State
Time: Carnian, Late Triassic
Etymology: From Tupi teyu "lizard" and wasu "big". The specific name honours paleontologist M. C. Barbarena.
References:
Kischlat, 1999. A new dinosaurian "rescued" from the Brazilian Triassic: Teyuwasu barbarenai, new taxon. Paleontologia em Destaque, Boletim Informativo da Sociedade Brasileira de Paleontologia 14(26) 58.

Description:
The current status is still disputed, it can be a basal dinosaur, a basal saurischian or a thecodont.

Pycnonemosaurus nevesi

Pycnonemosaurus nevesi Kellner & Campos, 2002

Place: Bauru Basin, Fazenda Roncador, Mato Grosso State;
Time: Late Cretaceous;
Size: 3-4 meters-tall, 6-7 meters-long, about 2 tons.
Etymology: From Greek pyknos "dense, thick" and Latin nemus "woodland, forest", translating the Portuguese name of the State of Mato Grosso, "dense wood, dense bush".
Art: Maurílio de Oliveira

Amazonsaurus maranhensis

Amazonsaurus maranhensis Carvalho, Ávila & Salgado, 2003

Place: Alcântara Formation, Itapecuru Group, Parnaíba Basin, Itapecuru-Mirim, Maranhão State
Time: Aptian-Albian, Early Cretaceous;
Size: -;
Taxonomy: Saurischia, Sauropodomorpha, Sauropoda, Diplodocoidea.

Unaysaurus tolentinoi

Unaysaurus tolentinoi Leal, Azevedo, Kellner & da Rosa, 2004

Place: Caturrita Formatio (Santa Maria), Rio Grande do Sul State;
Time: Carnian-Norian, Triassic;
Size: 2.1 meters-long;
Taxonomy: Saurischia, Theropoda, Tetanurae, Coelurosauria, Compsognathidae.
Art (Modelling): Orlando Grillo

Mirischia asymmetrica

Mirischia asymmetrica Naish, Martill & Frey, 2004

Place: Santana Formation, Romualdo Member, Ceará State;
Time: Albian?, Early Cretaceous;
Size: 2.1 meters-long;
Taxonomy: Saurischia, Theropoda, Tetanurae, Coelurosauria, Compsognathidae.


Compsognathidae's possible Phylogeny
Orange: Europe
Yellow: Nuclear Asia (Angara)
Blue: South America

Adamantisaurus mezzalirai

Adamantisaurus mezzalirai Santucci, Miloni & Bertini, 2006

Place: Adamantina Formation
Time: Maastrichtian, Late Cretaceous

Uberabatitan ribeiroi

Uberabatitan ribeiroi Salgado & Carvalho, 2008

Place: Marília Formation, Serra da Galga, Uberaba, Minas Gerais State;
Time: Maastrichtian, Late Cretaceous;
Size: -;
Taxonomy: Saurischia, Sauropodomorpha, Sauropoda, Titanosauria;
Etymology: from Uberaba, city in Minas Gerais State, where the fossils were discovered. .
References: Salgado, Leonardo; and Carvalho, Ismar de Souza (2008). "Uberabatitan ribeiroi, a new titanosaur from the Marília Formation (Bauru Group, Upper Cretaceous), Minas Gerais, Brazil". Palaeontology 51 (4): 881-901.

Original Abstract: A new Late Cretaceous titanosaur sauropod from the Bauru Basin of Brazil, Uberabatitan ribeiroi gen. et sp. nov., represented by at least three specimens, is described. The material comes from a level of coarse sandstone within the Serra da Galga sequence in Uberaba County, Minas Gerais State. The fossiliferous strata belong to the Marília Formation (Serra da Galga Member), Bauru Group, considered to be Maastrichtian in age. The fossils occur in the uppermost levels of the above-mentioned unit; thus, Uberabatitan ribeiroi is the youngest titanosaur to have been recorded from the Bauru Basin. The autapomorphies that support the new species are: (1) anterior and mid-cervicals with postzygodiapophyseal lamina (podl) segmented in zygapophyseal and diapophyseal laminae, of which the first extends rostrodorsally over the second; (2) mid-dorsals with a robust lateral lamina formed mainly by a diapophyseal lamina (probably homologous to the postzygodiapophyseal lamina), and, to a lesser extent, by a relic of the spinodiapophyseal lamina (spdl); (3) mid (and probably posterior) dorsals with accessory neural laminae, which are lateral to the prespinal lamina, and probably homologous to the spinoprezygapophyseal laminae (sprl); (4) mid-caudal centra with deeply excavated lateral faces; (5) pubis very thick and robust, with a very stout longitudinal crest on its external (ventral) face; and (6) proximal end of the tibia with a prominent lateral protuberance, which articulates with an equally prominent medial knob of the fibula. The titanosaurian assemblage at Uberaba includes, apart from U. ribeiroi, well-preserved specimens assigned to species of uncertain affinities (Trigonosaurus pricei and Baurutitan britoi), as well as a few vertebrae assigned to aeolosaurines.

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