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Xenosaurus rackhami STUART, 1941

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Higher TaxaXenosauridae, Diploglossa, Anguimorpha, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Rackham’s Knob-scaled Lizard
S: Xenosauro de Collar 
SynonymXenosaurus grandis rackhami STUART 1941
Xenosaurus rackhami — STUART 1963
Xenosaurus grandis rackhami — LYNCH & SMITH 1965: 171
Xenosaurus grandis rackhami — LINER & CASAS-ANDREU 2008
Xenosaurus rackhami — BHULLAR 2011
Xenosaurus rackhami — WOOLRICH-PIÑA & SMITH 2012
Xenosaurus rackhami — NIETO-MONTES DE OCA et al. 2022 
DistributionMexico (Oaxaca, highlands of CE Chiapas), Guatemala

Type locality: Finca Volcán, 49 km east of Cobán, Alta Verapaz, Guatemala, 4000 feet.  
Reproductionviviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: UMMZ 89072 
DiagnosisAdditional details, e.g. a detailed description or comparisons (578 characters), are available for collaborators and contributors. Please contact us for details. 
CommentDistribution: see maps in WOOLRICH-PIÑA & SMITH 2012 and Nieto-Montes de Oca et al. 2022: 48 (Fig. 6). 
EtymologyNamed after Horace H. Rackham (1858-1933), a Detroit lawyer who invested $5,000 in Henry Ford's new venture to build "horseless carriages." Ford bought out minority shareholders (1919), and Rackham's $5,000 turned into $12.5 million on top of the $2 million in dividends he had already been paid. 
References
  • Aguilar-López JL, Luría-Manzano R, Pineda E, Canseco-Márquez L 2021. Selva Zoque, Mexico: an important Mesoamerican tropical region for reptile species diversity and conservation. ZooKeys 1054: 127-153 - get paper here
  • Ballinger, R.E., G.R. Smith, and J.A. Lemos-Espinal 2000. Xenosaurus (Gray) Knob-scaled Lizards. Catalogue of American Amphibians and Reptiles (712): 1-3 - get paper here
  • Ballinger,R.E.,J.A.Lemos-Espinal, and G.R. Smith 2000. Xenosaurus grandis (Gray) Knob-scaled Lizard. Catalogue of American Amphibians and Reptiles (713): 1-4 - get paper here
  • Barrows, Shirley;Smith, Hobart M. 1947. The skeleton of the lizard Xenosaurus grandis (Gray). Univ. Kansas Sci. Bull. 31 (12): 227-281 - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Bhullar, B-A. S. 2011. The Power and Utility Of Morphological Characters In Systematics: A Fully Resolved Phylogeny of Xenosaurus and Its Fossil Relatives (Squamata: Anguimorpha). Bull. Mus. Comp. Zool. Harvard 160 (3): 65–181 - get paper here
  • Boulenger, G.A. 1885. Catalogue of the lizards in the British Museum (Natural History). Vol. 2, Second edition. London, xiii+497 pp. - get paper here
  • Camarillo R., José L. 1990. Xenosaurus grandis en el Estado de Hidalgo, México. Boletín de la Sociedad Herpetológica Mexicana 2 (2): 17-18 - get paper here
  • Cope, E.D. 1867. Fifth contribution lo the herpetology of tropical America. Proc. Acad. nat. Sci. Philadelphia, 18 [1866]: 317-323 - get paper here
  • Gray,J.E. 1856. Notice of a new species of nocturnal lizard from Mexico. Ann. Mag. nat. Hist. (2) 18: 270 - get paper here
  • Günther, A. C. L. G. 1885. Reptilia and Batrachia. Biologia Centrali-Américana. Taylor, & Francis, London, 326 pp. [published in parts from 1885-1902; reprint by the SSAR 1987] - get paper here
  • Haas, Georg 1960. On the trigeminus muscles of the lizards Xenosaurus grandis and Shinisaurus crocodilurus. American Museum novitates (2017) - get paper here
  • Johnson, Jerry D.; Vicente Mata-Silva, Elí García Padilla, and Larry David Wilson 2015. The Herpetofauna of Chiapas, Mexico: composition, distribution, and conservation. Mesoamerican Herpetology 2 (3): 272–329. - get paper here
  • King, F. W., & THOMPSON, F. G. 1968. A review of the American lizards of the genus Xenosaurus Peters. Bulletin of the Florida State Museum 12: 93-123. - get paper here
  • Köhler, G. 2000. Reptilien und Amphibien Mittelamerikas, Bd 1: Krokodile, Schildkröten, Echsen. Herpeton Verlag, Offenbach, 158 pp.
  • Lynch, John D.; Smith, Hobart M. 1965. A new species of Xenosaurus (Reptilia: Xenosauridae) from the Isthmus of Tehuantepec, Mexico. Transactions of the Kansas Academy of Science 68 (1): 163-172 - get paper here
  • Mata-Silva, Vicente, Jerry D. Johnson, Larry David Wilson and Elí García-Padilla. 2015. The herpetofauna of Oaxaca, Mexico: composition, physiographic distribution, and conservation status. Mesoamerican Herpetology 2 (1): 6–62 - get paper here
  • Nieto-Montes de Oca, Adrián; Nicté Castresana-Villanueva, Luis Canseco-Márquez & Jonathan A. Campbell 2022. A New Species of Xenosaurus (Squamata: Xenosauridae) from the Sierra de Juárez of Oaxaca, Mexico Herpetologica 78(1): 40–50. - get paper here
  • Nieto-Montes de Oca, Adrián; Uri O. García-Vázquez, J. Jaime Zúñiga-Vega and Walter Schmidt-Ballardo 2013. A new species of Xenosaurus (Squamata: Xenosauridae) from the Sierra Gorda Biosphere Reserve of Querétaro, Mexico. Revista Mexicana de Biodiversidad 84: 485-498 - get paper here
  • Pérez Ramos, Edmundo; Lucia Saldaña de la Riva; Jonathan A. Campbell 2000. A new allopatric species of Xenosaurus (Squamata: Xenosauridae) from Guerrero, Mexico. Herpetologica 56 (4): 500-506 - get paper here
  • Peters, Wilhem Carl Hartwig 1861. Eine neue Gattung von Eidechsen, Xenosaurus fasciatus aus Mexico. Monatsber. königl. Akad. Wiss. Berlin. 1861 (April): 453-454 - get paper here
  • Phillips, C.A. 2003. HERPETOLOGICAL TYPE-SPECIMENS IN THE UNIVERSITY OF ILLINOIS MUSEUM OF NATURAL HISTORY: AN UPDATE TO THE PRIMARY TYPES. [type catalogue] University of Illinois Museum of Natural History, 17 pp.
  • Stuart, L. C. 1948. The amphibians and reptiles of Alta Verapaz Guatamala. Miscellaneous Publications, Museum of Zoology, University of Michigan 69: 1-109 - get paper here
  • Stuart, L.C. 1963. A checklist of the herpetofauna of Guatemala. Misc. Publ. Mus. Zool., Univ. Michigan (No. 122): 1-150 - get paper here
  • Stuart,L.C. 1941. A new species of Xenosaurus from Guatemala. Proc. Biol. Soc. Washington 54: 47-48. - get paper here
  • Werler, John E. & Shannon, Frederick A. 1961. Two new lizards (genera Abronia and Xenosaurus) from the Los Tuxtlas Range of Veracruz, Mexico. Transactions of the Kansas Academy of Science 64 (2): 123-132 - get paper here
  • Woolrich-Piña, Guillermo A. and Geoffrey R. Smith 2012. A New Species of Xenosaurus from the Sierra Madre Oriental, Mexico. Herpetologica 68 (4): 551-559. - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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