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Rhachisaurus brachylepis (DIXON, 1974)

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Higher TaxaGymnophthalmidae (Rhachisaurinae), Sauria, Gymnophthalmoidea, Squamata (lizards) 
Subspecies 
Common NamesDixon's Anotosaura 
SynonymAnotosaura brachylepis DIXON 1974: 17
Rhachisaurus brachylepis — PELLEGRINO et al. 2001
Rhachisaurus brachylepis — CASTOE et al. 2004 
DistributionBrazil (Minas Gerais)

Type locality: Brazil, Minas Gerais, Serra do Cipo  
Reproductionoviparous 
TypesHolotype: MCZ 133174, adult female 
DiagnosisDiagnosis (genus): The genus Rhachisaurus is characterized by the absence of an external ear opening, the presence of four digits on the front and hind limbs, a high number of short, narrow and smooth dorsal scales (57–60), absence of collar, a tail that is more than twice body length, a large number of temporals, ten rows of gulars, three pairs of chinshields, four supraoculars, six superciliaries, squared ventrals and rounded scales in the lateral sides of the neck.
 
CommentType species: Anotosaura brachylepis DIXON 1974 is the type species of the genus Rhachisaurus PELLEGRINO et al. 2001. The species is also the type (and only) species of the subfamily Rhachisaurinae. 
Etymology 
References
  • Castoe, T.A.; Doan, T.M. & Parkinson, C.L. 2004. Data partitions and complex models in Bayesian analysis: the phylogeny of Gymnophthalmid lizards. Systematic Biology 53 (3): 448-469 - get paper here
  • Dixon,J.R. 1974. Systematic review of the lizard genus Anotosaura (Teiidae). Herpetologica 30: 13-18 - get paper here
  • Pellegrino, K. C. M.; Rodrigues, M. T.; Yonenaga-Yassuda, Y.; Sites, J. W. 2001. A molecular perspective on the evolution of microteiid lizards (Squamata, Gymnophthalmidae), and a new classification for the family. Biological Journal of the Linnean Society 74 (3): 315-338 - get paper here
  • RIBEIRO-JÚNIOR, MARCO A. & SILVANA AMARAL 2017. Catalogue of distribution of lizards (Reptilia: Squamata) from the Brazilian Amazonia. IV. Alopoglossidae, Gymnophthalmidae Zootaxa 4269 (2): 151-196
  • RODRIGUES, MIGUEL TREFAUT; ELIZA MARIA XAVIER FREIRE, KATIA CRISTINA MACHADO PELLEGRINO and JACK W. SITES JR 2005. Phylogenetic relationships of a new genus and species of microteiid lizard from the Atlantic forest of north-eastern Brazil (Squamata, Gymnophthalmidae). Zoological Journal of the Linnean Society 144 (4): 543-557 - get paper here
  • Rodrigues, Miguel Trefaut; Katia Cristina Machado Pellegrino, Marianna Dixo, Vanessa Kruth Verdade, Dante Pavan, Antônio Jorge Suzart Argolo, and Jack W. Sites Jr. 2007. A new genus of microteiid lizard from the Atlantic forests of State of Bahia, Brazil, with a new generic name for Colobosaura mentalis, and a discussion of relationships among the Heterodactylini (Squamata, Gymnophthalmidae). American Museum novitates (3565): 1-27 - get paper here
  • Vanzolini, P. E. 1976. Two notes on Anotosaura (Sauria, Teiidae). Pap. Avulsos Zool. 30 (8): 119-122
 
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