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Batagur baska (GRAY, 1831)

IUCN Red List - Batagur baska - Critically Endangered, CR
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Higher TaxaGeoemydidae (Geoemydinae), Testudinoidea, Testudines (turtles)
Subspecies 
Common NamesE: Batagur; (Northern) River Terrapin
G: Batagur-Flussschildkröte 
SynonymEmys baska GRAY 1831
Emys batagur GRAY 1831
Trionyx cuvieri GRAY 1831
Tetronyx longicollis LESSON 1832
Emys tetraonyx TEMMINCK & SCHLEGEL 1833
Tetraonyx Lessonii DUMÉRIL & BIBRON 1835: 338
Tetronyx [sic] Baska — DUMÉRIL & BIBRON 1835: 341
Batagur baska — GRAY 1855
Batagur baska — GRAY 1857: 343
Tetraonyx lessonii — THEOBALD 1868: 17
Batagur baska — MURRAY 1886: 9
Batagur baska — DE ROOIJ 1915: 294
Batagur baska ranongensis NUTAPHAND 1979: 121 (nom. dubium)
Batagur baska — ERNST & BARBOUR 1989: 141
Batagur baska — MANTHEY & GROSSMANN 1997: 441
Batagur baska — COX et al. 1998: 125
Batagur baska ranongensis — OBST 2003: 17
Batagur baska — RHODIN et al. 2010
Batagur baska — TTWG 2021 
DistributionMyanmar (= Burma) (Irrawaddy River), S Thailand, Cambodia, West Malaysia, India (Gujarat etc.), Bangladesh

baska: Bangladesh, India (Orissa = Odisha, West Bengal), Myanmar, probably extirpated in Thailand; Type locality: “India”

ranongensis: Thailand; Type locality: estuaries of Ranong Province, Malay Peninsula, Thailand.  
Reproductionoviparous. 
TypesHolotype: unknown (fide NGUYEN et al. 2009)
Holotype: not given in original description [ranongensis] 
Diagnosis 
CommentSynonymy: partly after RHODIN et al. 2010. The subspecies ranongensis Nutaphand 1979 is not well differentiated and has been synonymized under baska by Fritz and Havas (2006, 2007), but no specific morphologic or genetic analysis has yet been performed to formally evaluate the status of this taxon.

Conservation: This is one of the most endangered turtle species according to a 2003 assessment by the IUCN. Not in Thailand fide CHAN-ARD et al. 1999.

Distribution: see map in TTWG 2017: 84.

Habitat: B. affinis, B. baska, and B. borneoensis are the only species living in tidal, brackish areas of the estuaries of medium and large rivers (Ernst et al. 2000)

Type species: Emys batagur GRAY 1831 is the type species of the genus Batagur GRAY 1856: 35 [1855]. Batagur is the type genus of the subfamily Batagurinae. 
References
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