BOLETIM DO MUSEU NACIONAL NOVA SERIE RIO DE JANEIRO - BRASIL ISSN 0080-3200
GEOLOGIA
No 57
05 DE SETEMBRO DE 2001
SHORT NOTE ON A NEW BAURUSUCHIDAE (CROCODYLIFORMES, METASUCHIA) FROM THE UPPER CRETACEOUS OF BRAZIL ' I ) (With 3 figures) IIIOGENES IIE ALMEIDA C A M P O S ( 2 ) ( 3 ) Museu d c CiEncias d a Terra - Rlo d e Janeiro
J O S MAIITIN ~ SUAREZ (4) Univcrsidade Estadual Paulisla - Presidcnte Prudcnte DOUG1,AS RIFF ( 5 ) ALEXANDEK W. A. KELLNER (2) Museu Nacional Universidade Fcderal d o Kio d e Janeiro
During the field season of 1988, one of the authors (J.M.S.) collected a n almost complete skeleton of a crocodyliform from the Adamantina Facies of the Bauru Formation (Turonian-Santonian) at Irapuru, State of S5o Paulo (CAMPOS & MARTIN SUAREZ, 1988). The specimen consists of a n almost complete skull, the middle portion of a mandible, a partial vertebral column (lacking most of the tail), and limb elements, making this one of the most complete crocodyliform specimen found in Brazil so far. The fossil was preserved in coarse sandstone of white color. Based on microfossils, a post-Cenomanian to pre-Campanian age is suggested for the outcrops of the Adamantina Facies in the region of Presidente Prudente, Alvares Machado, and Ibira in the State of SSo Paulo (DIAS-BRIT0 et al., 1998), which includes those strata. It should be noted new data on ostracods of the lower sections of the Adamantina Facies have been recently dated a s Campanian - Early Maastrichtian. (GOBBORODRIGUES et al., 1999). When it was found, CAMPOS & MARTIN SUAREZ (1988) regarded the specimen labeled DGM 1477-R a s a possibly new taxon, closely related to Baurusuchus pachecoi Price, 1945, a s a member of the Baurusuchidae. In this paper we confirm that view and briefly describe this new taxon, which represents the second record of this crocodyliform clade in Brazil. A more detailed description of this material, including the postcranial bones (still in preparation) will be presented elsewhere. on July 06, 2001. Accepted on August 20, 2001 'Received Fcllow oftlie Conscll~oNacional dc Dcscnvolvlrnento Cicntitico e Tecnol6gico (CNPq). Associale Researcher America11Museum of Natural Iiistory I
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Muscu de CiOnclas da Terra - DNPM, Av. I'asteur, 404, lirca, 22290-240, lIio dz Janeiro, RS, Brazil. (Jniversidadc l'sladual I'aulista, Faculdade de Ci6ncia e .l'ecnologia, Ruu liobcrto Simonscn, 305, 19060-900, SP,Hra~il. Presidentc Pr~~tlenle, Fellow of the Funda~iiodc Amparo A I'esquisa do Estado do Ilio de Sane~ro(FAPEIIJ). E-mail:
[email protected]
D.A.CAMPOS, J.MARTIN SUAREZ, D.RIFF & A W A.I
