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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis: Sarcopterygii
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Henophidia

Familia: Xenophidiidae
Genus: Xenophidion
Species: Xenophidion schaeferi

Xenophidion schaeferi Günther & Manthey, 1995

Template:Günther & Manthey, 1995

Quah, E.S.H., Grismer, L.L., Jetten, T., Wood, P.L. Jr., Miralles, A., Sah, S.A.M., Guek, K.H.P. & Brady, M.L. 2018. The rediscovery of Schaefer’s Spine-jawed Snake (Xenophidion schaeferi Günther & Manthey, 1995) (Serpentes, Xenophidiidae) from Peninsular Malaysia with notes on its variation and the first record of the genus from Sumatra, Indonesia. Zootaxa 4441(2): 366–378. DOI: 10.11646/zootaxa.4441.2.10 Paywall Reference page.


Uetz, P. & Hallermann, J. 2022. Xenophidion schaeferi. The Reptile Database. Accessed on 6 February 2020.
Grismer, L. 2012. IUCN: Xenophidion schaeferi (Data Deficient). The IUCN Red List of Threatened Species 2012: e.T192091A2038648. DOI: 10.2305/IUCN.UK.2012-1.RLTS.T192091A2038648.en

Vernacular names
English: Malayan Spine-jawed Snake

Xenophidion schaeferi, also known commonly as the Malayan spinejaw snake[2] or Schäfer's spiny-jawed snake,[1] is a species of snake in the monotypic family Xenophidiidae.[2] The species is endemic to Malaysia.


The specific name, schaeferi is in honor of German herpetologist Christian Schäfer who collected the holotype.[3]
Geographic range

X. schaeferi is found in the Malaysian state of Selangor, in western Peninsular Malaysia.[1][2]

The preferred natural habitat of X. schaeferi is forest.[1]

X. schaeferi is oviparous.[2]
DNA sequence divergence of sibling species

In the genus Xenophidion, there is one sister species, X. acanthognathus. Molecular analyses of a new specimen of X. acanthognathus reveal that it only differs from the holotype of X. schaeferi by a minimum sequence divergence of 0.27%.[4]

Grismer, L. (2012). "Xenophidion schaeferi". IUCN Red List of Threatened Species. 2012: e.T192091A2038648. doi:10.2305/IUCN.UK.2012-1.RLTS.T192091A2038648.en. Retrieved 19 November 2021.
Xenophidion schaeferi at the Reptile Database. Accessed 14 December 2018.
Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Xenophidion schaeferi, p. 234).

Quah, Evan S.H.; Grismer, L. Lee; Jetten, Thom; Wood, Perry L. Jr.; Miralles, Aurélien; Sah, Shahrul Anuar Mohd; Guek, Kurt H.P.; Brady, Matthew L. (2018-06-27). "The rediscovery of Schaefer's Spine-jawed Snake (Xenophidion schaeferi Günther & Manthey, 1995) (Serpentes, Xenophidiidae) from Peninsular Malaysia with notes on its variation and the first record of the genus from Sumatra, Indonesia". Zootaxa. 4441 (2): 366–378. doi:10.11646/zootaxa.4441.2.10. ISSN 1175-5334. PMID 30314015.

Further reading

Manthey U, Günther R (1995). "Xenophidion, a new genus with two new species of snakes from Malaysia (Serpentes, Colubridae)". Amphibia-Reptilia 16 (3): 229–240. (Xenophidion schaeferi, new species).


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