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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 Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
Reproductionoviparous 
TypesHolotype: MCZ 133174, adult female 
CommentDiagnosis (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.

Type 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. 
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
  • 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 - get paper here
 
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http://reptile-database.reptarium.cz/species?genus=Rhachisaurus&species=brachylepis

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