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Saiphos equalis (GRAY, 1825)

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Higher TaxaScincidae, Sphenomorphinae, Scincoidea, Sauria, Squamata (lizards) 
Subspecies 
Common NamesYellow-bellied Three-toed Skink, Three-toed Skink 
SynonymSeps equalis GRAY 1825: 202
Anguis lacertina GRAY 1831: 72 (nomen nudum)
Siaphos aequalis — GRAY 1839 (emendation)
Lygosoma (Siaphos) aequale — LONGMAN 1915: 34
Saiphos equalis — COGGER 1983: 183
Saiphos equalis — COGGER 2000: 572
Saiphos aequalis — GREER et al. 2006 
DistributionAustralia (New South Wales, SE Queensland) 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.
 
ReproductionS. equalis is only one of 3 or so species that are known to have both viviparous and oviparous reproduction (STEWART et al. 2010). 
TypesHolotype: BMNH 1946.8.16.88, from unknown locality. 
CommentBoth limbs with only 3 digits. Synonymy after COGGER 1983.

Type Species: Seps equalis GRAY 1825 is the type species of the genus Saiphos GRAY 1831. 
References
  • Biazik, Joanna M.; Michael B. Thompson, and Christopher R. Murphy 2010. Paracellular and transcellular transport across the squamate uterine epithelium. Herp. Cons. Biol. 5 (2) - get paper here
  • Cogger, H. G. 2014. Reptiles and Amphibians of Australia, 7th ed. CSIRO Publishing, xxx + 1033 pp.
  • Cogger, H.G. 2000. Reptiles and Amphibians of Australia, 6th ed. Ralph Curtis Publishing, Sanibel Island, 808 pp.
  • Gray, J. E. 1831. A synopsis of the species of Class Reptilia. In: Griffith, E & E. Pidgeon: The animal kingdom arranged in conformity with its organisation by the Baron Cuvier with additional descriptions of all the species hither named, and of many before noticed [V Whittaker, Treacher and Co., London: 481 + 110 pp. [1830]
  • Gray, J.E. 1825. A synopsis of the genera of reptiles and Amphibia, with a description of some new species. Annals of Philosophy, 10:193—217 - get paper here
  • Greer, A.; David, P. & Teynié, A. 2006. The Southeast Asian scincid lizard Siaphos tridigitus Bourret, 1939 (Reptilia, Scincidae): a second specimen. Zoosystema 28 (3) : 785-790
  • Hugi, Jasmina; Mark N. Hutchinson, D. Koyabu, Marcelo R. Sánchez-Villagra 2012. Heterochronic shifts in the ossification sequences of surface- and subsurface-dwelling skinks are correlated with the degree of limb reduction. Zoology 115 (3): 188-198 - get paper here
  • Johnson, R. 2002. A western range extension for the skink Saiphos equalis. Memoirs of the Queensland Museum 48(1): 92
  • Longman, H. A. 1915. Reptiles from Queensland and the Northern Territory. Memoirs of the Queensland Museum 3: 30-34.
  • Mo, Matthew 2015. Herpetofaunal community of the constructed Lime Kiln Bay Wetland, south Sydney, New South Wales. Victorian Naturalist 132 (3): 64-72 - get paper here
  • Murphy, Michael J. 1994. Reptiles and amphibians of Seven Mile Beach National park, NSW. Herpetofauna (Sydney) 24 (2): 24-30
  • Parker, Scott L.; Christopher R. Murphy, and Michael B. Thompson 2010. Uterine angiogenesis in squamate reptiles: Implications for the evolution of viviparity. Herp. Cons. Biol. 5 (2) - get paper here
  • Reeder, T.W. 2003. A phylogeny of the Australian Sphenomorphus group (Scincidae: Squamata) and the phylogenetic placement of the crocodile skinks (Tribolonotus): Bayesian approaches to assessing congruence and obtaining confidence in maximum likelihood inferred relatio Molecular Phylogenetics and Evolution 27: 384–397 - get paper here
  • Stewart, J. R., Mathieson, A. N., Ecay, T. W., Herbert, J. F., Parker, S. L. and Thompson, M. B. 2010. Uterine and eggshell structure and histochemistry in a lizard with prolonged uterine egg retention (Lacertilia, Scincidae, Saiphos). J. Morphol. doi: 10.1002/jmor.10877 - get paper here
  • Stewart, James R. and Tom W. Ecay 2010. Patterns of maternal provision and embryonic mobilization of calcium in oviparous and viviparous squamate reptiles. Herp. Cons. Biol. 5 (2) - get paper here
  • Wilson, S. & Swan, G. 2010. A complete guide to reptiles of Australia, 3rd ed. Chatswood: New Holland, 558 pp.
 
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