Ceratophora

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
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
Cladus: Unidentata Episquamata Toxicofera
Subordo: Iguania
Infraordo: Acrodonta

Familia: Agamidae
Subfamilia: Draconinae
Genus: Ceratophora
Species: C. aspera – C. erdeleni – C. karu – C. stoddartii - C. tennentiis
Name

Ceratophora

Ceratophora is a genus of agamid lizards found in Sri Lanka. The male has a horn on its snout.

Description

The tympanum is hidden, and the body is more or less laterally compressed, and covered with unequal scales. No dorsal crest is present; and a nuchal crest can be present or absent. No gular sac or gular fold is present. A large rostral appendage occurs, at least in the males. No femoral or preanal pores are found.[2]
Species

The following species are recognized as being valid.[3][4]

Ceratophora aspera Günther, 1864 – rough-nosed horned lizard, Sri Lanka horned agama
Ceratophora erdeleni Pethiyagoda & Manamendra-Arachchi, 1998
Ceratophora karu Pethiyagoda & Manamendra-Arachchi, 1998
Ceratophora stoddartii Gray, 1834 – rhino-horned lizard, Stoddart's unicorn lizard, the mountain horned agama
Ceratophora tennentii Günther, 1861 – rhinoceros agama, horn-nosed lizard, leaf-nosed lizard, Tennent's leaf-nosed lizard
Ceratophora ukuwelai Karunarathna, Poyarkov, Amarasinghe, Surasinghe, Bushuev, Madawala, Gorin, & De Silva, 2020 – Ukuwelas's rough-horn lizard

Key to selected species

a. Gular scales larger than the ventrals, smooth; lateral scales large, unequal; rostral appendage scaleless — C. stoddartii
b. Gular scales larger than the ventrals, feebly keeled; lateral scales large, equal; rostral appendage scaly — C. tennentii
c. Gular scales smaller than the ventrals, strongly keeled; lateral scales small; rostral appendage scaly — C. aspera[2]

References

Pethiyagoda R, Manamendra-Arachchi K. 1998. A revision of the endemic Sri Lankan agamid lizard genus Ceratophora Gray, 1835, with description of two new species. J. South Asian Nat. Hist. 3 (1): 1-50.
Boulenger GA. 1890. The Fauna of British India, Including Ceylon and Burma. Reptilia and Batrachia. London: Secretary of State for India in Council. (Taylor and Francis, printers). xviii + 541 pp. (Genus Ceratophora, p. 118).
"Ceratophora ". The Reptile Database. www.reptile-database.org.

"Ceratophora ". Dahms Tierleben. www.dahmstierleben.de/systematik/Reptilien/Squamata/Iguania/agamidae.

Further reading

Boulenger GA. 1885. Catalogue of the Lizards in the British Museum (Natural History). Second Edition. Volume I. ... Agamidæ. London: Trustees of the British Museum (Natural History). (Taylor & Francis, printers). xii + 436 pp. + Plates I-XXXII. (Genus Ceratophora, p. 277).
Gray JE. 1835. Illustrations of Indian Zoology; Chiefly Selected from the Collection of Major-General Hardwicke. Vol. II. London: Adolphus Richter. (Stirling, printer). 102 plates. (Ceratophora stoddartii, Plate 68, Figure 2).
Gray JE. 1845. Catalogue of the Specimens of Lizards in the Collection of the British Museum. London: Trustees of the British Museum. (Edward Newman, printer). xxviii + 289 pp. (Genus Ceratophora, p. 237).
Günther ACLG. 1864. The Reptiles of British India. London: The Ray Society. (Taylor and Francis, printers). xxvii + 452 pp. + Plates I-XXVI. (Genus Ceratophora, p. 129).
Smith MA. 1935. The Fauna of British India, Including Ceylon and Burma. Reptilia and Amphibia. Vol. II.—Sauria. London: Secretary of State for India in Council. (Taylor and Francis, printers). xiii + 440 pp. + Plate I + 2 maps. (Genus Ceratophora, pp. 151–152).