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Chelonoidis phantasticus (VAN DENBURGH, 1907)

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Higher TaxaTestudinidae, Testudinoidea, Testudines (turtles) 
Subspecies 
Common NamesNarborough Island Giant Tortoise 
SynonymTestudo phantasticus VAN DENBURGH 1907: 4
Geochelone nigra phantastica — IVERSON 1992: 250
Chelonoidis phantastica — RHODIN et al. 2010
Chelonoidis phantastica — TTWG 2014: 395
Chelonoidis phantasticus — TTWG 2017: 130 
DistributionEcuador: Galapagos (Narborough = Fernandina)

Type locality: Narborough Island [= Fernandina].  
Reproductionoviparous. 
TypesHolotype: CAS 8101 
Diagnosis 
CommentConservation: Chelonoidis phantastica has been extinct since ca. 1960 (RHODIN et al. 2010), but apparently re-discovered in 2018 by the Galapagos Parks authority and the Galapagos Conservancy group, as was announced in a tweet by Marcelo Mata in Feb 2019 (see link to globo.com).

Taxonomy: This is a member of the Chelonoidis nigra species complex, variably considered subspecies of C. nigra or as valid species. Rhodin et al. (2010) listed them separately but under the heading “C. nigra species complex”. Probably needs to be called C. phantasticus following Olson & David 2014. 
Etymology 
References
  • Iverson, J.B. 1992. A revised Checklist with Distribution Maps of the Turtles of the World. Richmond, Indiana, privately published, 363 pp.
  • TTWG [Peter Paul van Dijk, John B. Iverson, Anders G.J. Rhodin, H. Bradley Shaffer, and Roger Bour] 2014. Turtles of the World, 7th Edition: Annotated Checklist of Taxonomy, Synonymy, Distribution with Maps, and Conservation Status. 000.v7. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v7.2014 - 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.; van Dijk, P.P.; Iverson, J.B. & Shaffer, H.B. [turtle taxonomy working group] 2010. Turtles of the World, 2010 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v3.2010 - get paper here
  • Van Denburgh, John 1907. Expedition of the California Academy of Sciences to the Galapagos Islands, 1905-1906. I. Preliminary descriptions of four new races of Gigantic Land Tortoises from the Galapagos Islands. Proc. Cal. Acad. Sci. 1: 1-6 - get paper here
 
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http://reptile-database.reptarium.cz/species?genus=Chelonoidis&species=phantasticus

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