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

Familia: Leptotyphlopidae
Genus: Namibiana
Species: Namibiana gracilior

Namibiana gracilior (Boulenger, 1910)

Syntypes (11): BMNH 1946.1.16.51 (formerly BMNH 1910.8.5.2), BMNH 1946.1.16.93 (formerly BMNH 1910.8.5.3), SAM 2398, SAM 2418–19, SAM 3359, SAM 9182, SAM 9184, SAM 8068, SAM 43241 and SAM 43542.

Type locality: “Cape Colony, South Africa. Van Rynsdorp (A.W. Rogers); Matjesfontein (Purcell); Clanwilliam (Leipoldt)”

Glauconia gracilior Boulenger, 1910: 524 [original combination]
Leptotyphlops gracilior — FitzSimons, 1946: 355 [subsequent combination]
Namibiana gracilior — Adalsteinsson, Branch, Trape, Vitt & Hedges, 2009: 13 [subsequent combination]

Additional references

Broadley, D.G. & Broadley, S. 1999. A review of the African worm snakes from south of latitude 12°S (Serpentes: Leptotyphlopidae). Syntarsus 5: 1–36. Reference page.
Adalsteinsson, S.A., Branch, W.R., Trape, S., Vitt, L.J. & Hedges, S.B. 2009. Molecular phylogeny, classification, and biogeography of snakes of the Family Leptotyphlopidae (Reptilia, Squamata). Zootaxa 2244: 1–50. Abstract & excerpt. Reference page.


Uetz, P. & Hallermann, J. 2022. Namibiana gracilior. The Reptile Database. Accessed on 26 October 2018.

Vernacular names
English: Slender Thread Snake

The slender thread snake or slender worm snake (Namibiana gracilior) is a species of snake in the family Leptotyphlopidae.[1][2][3][4] It is found in southern Namibia and western South Africa.[1][2]

Alexander, G.J. (2018). "Namibiana gracilior". IUCN Red List of Threatened Species. 2018: e.T110222301A115680835. doi:10.2305/IUCN.UK.2018-2.RLTS.T110222301A115680835.en. Retrieved 18 November 2021.
Namibiana gracilior at the Reptile Database. Accessed 29 July 2018.
McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
"Leptotyphlops". Integrated Taxonomic Information System. Retrieved 29 August 2007.


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