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Elseya lavarackorum (WHITE & ARCHER, 1994)

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Higher TaxaChelidae, Chelodininae, Pleurodira, Testudines (turtles)
Subspecies 
Common NamesE: Gulf Snapping Turtle, Lavarack's Turtle 
SynonymEmydura lavarackorum WHITE & ARCHER 1994
Elseya lavarackorum — THOMSON, WHITE & GEORGES 1997
Elseya lavarackorum — COGGER 2000: 739
Elseya dentata lavarackorum — ARTNER 2008
Elseya lavarackorum — GEORGES & THOMSON 2010
Elseya (Pelocomastes) lavarackorum — THOMSON et al. 2015
Elseya (Pelocomastes) lavarackorum — TTWG 2017: 195
Elseya oneiros JOSEPH-OUNI et al. 2020
Elseya lavarackorum — TTWG 2021
Elseya lavarackorum — JOSEPH-OUNI et al. 2022
Elseya oneiros — JOSEPH-OUNI et al. 2022 
DistributionAustralia (Queensland: Nicholson Drainage)

Type locality: Terrace Site, an excavation in fluviatile sediments exposed on the south bank of the Gregory River, Riversleigh Station, northwestern of Mount Isa (Pleistocene), Queensland, Australia (18º35'S 138º35'E).  
Reproductionoviparous. 
TypesHolotype: QM F24121 
DiagnosisAdditional details, e.g. a detailed description or comparisons (4753 characters), are available for collaborators and contributors. Please contact us for details. 
CommentConservation: this species is extinct and only known from fossils. However, Thomson et al. 1997 concluded that the species is actually extant with populations in the Nicholson River. Joseph-Ouni et al. (2020) described this population as Elseya (Pelocomastes) oneiros which was considered as a synonym of lavarackorum by TTWG 2021. Joseph-Ouni et al. (2022) provided further evidence that oneiros is a valid, extant species.

Type species: Pelocomastes ampla De Vis 1897 [fossil, = subjective synonym of Chelymys uberrima De Vis 1897 (fossil), is the type species of the subgenus Pelocomastes DE VIS 1897.

Distribution: see map in JOSEPH-OUNI et al. 2022: 110 (Fig. 3). 
EtymologyNamed after Tim and Sue Lavarack, Australian paleontologists who discovered the fossil of the turtle. It has subsequently been found to be still extant. 
References
  • Artner, H. 2008. The world's extant turtle species, Part 1. Emys 15 (3): 4-32
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Bour, R. 2008. Global diversity of turtles (Chelonii; Reptilia) in freshwater. Hydrobiologia 595:593–598 - get paper here
  • Cogger, H. G. 2014. Reptiles and Amphibians of Australia, 7th ed. CSIRO Publishing, xxx + 1033 pp. - get paper here
  • Cogger, H.G. 2000. Reptiles and Amphibians of Australia, 6th ed. Ralph Curtis Publishing, Sanibel Island, 808 pp.
  • Joseph-Ouni, M., McCord, W.P., Cann, J., Smales, I., Freeman, A., Sadlier, R., Couper, P., White, A. & Amey, A. 2020. The relics of Riversleigh: Re-examination of the fossil record of Elseya (Testudines: Chelidae) with description of a new species from the Gulf of Carpentaria drainages, Queensland, Australia. The Batagur Monographs 3: 5–70 - get paper here
  • Joseph-Ouni, M., White, A., Smales, I., Sadlier, R., Cann, J., McCord, W.P., Couper, P., Amey, A. & Freeman, A. 2022. Further evidence in support of the recognition of the Freshwater Turtle Elseya oneiros (Testudines: Chelidae) from the Nicholson and Gregory Rivers of Northern Queensland. Memoirs of the Queensland Museum - Nature. 63: 93–112
  • Joseph-Ouni, Mehdi, William P. McCord & Cann, John 2022. A NEW SPECIES OF ELSEYA (TESTUDINES: CHELIDAE) FROM THE RIVERS OF THE KIMBERLEY,WESTERN AUSTRALIA. The Batagur Monographs 5: 35-54
  • Thomson, S.; Amepou, Y., Anamiato, J. & Georges, A. 2015. A new species and subgenus of Elseya (Testudines: Pleurodira: Chelidae) from New Guinea. Zootaxa 4006 (1): 059–082 - get paper here
  • Thomson, Scott, Arthur Georges and Colin J. Limpus 2006. A new species of freshwater turtle in the genus Elseya (Testudines: Chelidae) from Central Coastal Queensland, Australia. Chelonian Conserv. Biol. 5 (1): 74-86. - get paper here
  • Thomson,S., White,A. & Georges,A. 1997. Re-evaluation of Emydura lavarackorum: identification of a living fossil. Memoirs of the Queensland Museum 42 (1): 327-336 - get paper here
  • TTWG; Anders G.J. Rhodin, John B. iverson, Roger Bour, Uwe Fritz, Arthur GeoRges, H. BRadley Shaffer, and Peter Paul van Dijk 2017. Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status (8th Ed.). In: Rhodin, A.G.J., Iverson, J.B., van Dijk, P.P., Saumure, R.A., Buhlmann, K.A., Pritchard, P.C.H., and Mittermeier, R.A. (Ed Chelonian Research Monographs 7:1–292. doi: 10.3854/crm.7.checklist.atlas.v8.2017 - get paper here
  • TTWG; Rhodin, A.G.J., Iverson, J.B., Bour, R., Fritz, U., Georges, A., Shaffer, H.B., and van Dijk, P.P. 2021. Turtles of the World: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status (9th Ed.). In: Rhodin, A.G.J., Iverson, J.B., van Dijk, P.P., Stanford, C.B., Goode, E.V., Buhlmann, K.A., and Mittermeier, R.A. (Eds.). Chelonian Research Monographs 8:1–472. doi:10.3854/crm.8.checklist.atlas.v9.2021. - get paper here
  • Vis, C.W. de 1897. The extinct freshwater turtles of Queensland. Annals of the Queensland Museum 3:1–7
  • White A W; Archer M 1994. Emydura lavarackorum, a new Pleistocene turtle (Pleurodira: Chelidae) from fluviatile deposits at Riversleigh, northwestern Queensland. Rec. South Austral. Mus. 27 (2): 159-167 - 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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