Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: Zatheria
Supercohors: Theria
Cohors: Eutheria
Infraclassis: Placentalia
Cladus: Boreoeutheria
Superordo: Euarchontoglires
Ordo: Rodentiaa
Subordo: Castorimorpha
Familia: Geomyidae
Genus: Geomys
Species: Geomys knoxjonesi
Name
Geomys knoxjonesi Baker & Genoways, 1975
Holotype: TTU 19872, adult ♀, skin, skul and skeleton, collected by Stephen L. Williams on 24 January 1974.
Type locality: “4.1 mi. N, 5.1 mi. E Kermit, Winkler Co., Texas”.
Combinations
Geomys bursarius knoxjonesi Baker & Genoways, 1975: 1 [original combination, as subspecies]
Geomys knoxjonesi: Baker, Davis, Bradley, Hamilton & van Den Bussche, 1989: 74 [subsequent combination, elevate to species]
Native distribution areas
United States (W Texas and SE New Mexico)
References
Primary references
Baker, R.J. & Genoways, H.H. 1975. A new subspecies of Geomys bursarius (Mammalia: Geomyidae) from Texas and New Mexico. Occasional papers, Museum of Texas Tech University 29: 1–18. BHL Reference page.
Links
Geomys knoxjonesi in Mammal Species of the World.
Wilson, Don E. & Reeder, DeeAnn M. (Editors) 2005. Mammal Species of the World – A Taxonomic and Geographic Reference. Third edition. ISBN 0-8018-8221-4.
Cassola, F. 2016. IUCN: Geomys knoxjonesi (Least Concern). The IUCN Red List of Threatened Species 2016: e.T136258A22218149. DOI: 10.2305/IUCN.UK.2016-2.RLTS.T136258A22218149.en
North American Mammals: Geomys knoxjonesi
Vernacular names
English: Knox Jones’s Pocket Gopher
Knox Jones's pocket gopher (Geomys knoxjonesi) is a species of pocket gopher found in Texas and New Mexico.[1] This species is named for Dr. J. Knox Jones Jr. (1929–1992), a prolific mammalogist at Texas Tech University.[3]
It is a relatively small gopher, with a total length of about 24 cm (9.4 in), including an 8 cm (3.1 in) tail, and weighing from 160 to 185 g (5.6 to 6.5 oz). Males are slightly larger than females. It has a typical gopher-like body, with large, clawed, forelimbs, small eyes and ears, and a fur-lined cheek pouches. The fur is buff-brown fur and fades to white on the belly and feet. It is visually indistinguishable from the plains pocket gopher, and was formerly considered to be a subspecies of that animal, before being raised to full species status in 1989 on the basis of genetic differences.[4]
Knox Jones's pocket gopher is found in the central western regions of Texas, roughly between the counties of Ward, Martin, and Cochran, and in southeastern New Mexico as far as Chaves County.[2] Within this region, it inhabits areas with deep sandy soils, rather than the harder loamy soils favoured by the plains pocket gopher, and feeds on the roots and stems of plants such as yucca, sunflowers, and various grasses.[4]
The gopher is territorial and solitary, except during the October to April breeding season.[5] Gestation lasts about 23 days, and the young are weaned after three to four weeks.[4]
References
Cassola, F. (2016). "Geomys knoxjonesi". IUCN Red List of Threatened Species. 2016: e.T136258A22218149. doi:10.2305/IUCN.UK.2016-2.RLTS.T136258A22218149.en. Retrieved 12 November 2021.
Baker, R.J.; Genoways, H.H. (1975). "A new subspecies of Geomys bursarius (Mammalia: Geomyidae) from Texas and New Mexico" (PDF). Occasional Papers, the Museum, Texas Tech University. 29: 1–18. Archived from the original (PDF) on 2016-03-04. Retrieved 2015-02-07.
Findlay, J.S.; et al. (1996). "J. Knox Jones, Jr.: 1929–1992". Journal of Mammalogy. 77 (2): 578–593. doi:10.2307/1382831. JSTOR 1382831.
Hopton, M.E.; Cameron, G.N. (2001). "Geomys knoxjonesi". Mammalian Species. 672: Number 672: pp. 1–3. doi:10.1644/1545-1410(2001)672<0001:GK>2.0.CO;2. S2CID 198969071.
Pembleton, E.F.; Baker, R.J. (1978). "Studies of a contact zone between chromosomally characterized populations of Geomys bursarius". Journal of Mammalogy. 59 (2): 233–242. doi:10.2307/1379909. JSTOR 1379909.
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