Rheosaurus sulcarostrum (DONNELLY, MACCULLOCH, UGARTE & KIZIRIAN, 2006)
Can you confirm these amateur observations of Rheosaurus sulcarostrum?
Rheosaurus sulcarostrum
We have no photos, try to find some by Google images search: 
| Higher Taxa | Gymnophthalmidae (Cercosaurinae), Sauria, Gymnophthalmoidea, Squamata (lizards) |
| Subspecies | |
| Common Names | |
| Synonym | Echinosaura sulcarostrum DONNELLY, MACCULLOCH, UGARTE & KIZIRIAN 2006 Rheosaurus sulcarostrum — VÁSQUEZ-RESTREPO et al. 2019 Echinosaura sulcarostrum — LINDKEN et al. 2024 |
| Distribution | Guyana Type locality: Guyana, Baramita, approximately 1 km S airstrip, 07°22’N, 060°29’W, elevation 100 m. |
| Reproduction | oviparous |
| Types | Holotype: ROM 22893 |
| Diagnosis | Diagnosis (genus Rheosaurus): Phenotypic characteristics of Rheosaurus include: (1) dorsal scales heterogeneous, with large or polygonal, longitudinally keeled scales intermixed with small irregular scales; (2) dorsal surface of the head with large, symmetrical scales; (3) internasal divided; (4) frontonasals three; (5) prefrontals paired; (6) frontal single; (7) frontoparietals paired; (8) interparietal well defined; (9) parietals paired; (10) rostral and mental striated; (11) three rows of scales between rostral and frontal scales; (12) postmental absent; (13) large chin shields in three pairs; (14) lower eyelid developed, with a palpebral disc divided into several, unpigmented scales; (15) ventral scales squared, not imbricated; (16) limbs pentadactyl, digits clawed; (17) femoral pores present in males (weakly developed) and absent in females. Rheosaurus differs from all other cercosaurines, including Echinosaura s.s. and its sister-group, in having striated rostral and mental scales and three rows of scales between rostral and frontal scales, and in lacking a postmental scale. It also differs from other cercosaurines, except Centrosaura, Echinosaura s.s., Gelanesaurus, Neusticurus and Potamites, in having heterogeneous dorsal scalation. For comparisons among related or similar genera see Figure 9 and Table 5 in VÁSQUEZ-RESTREPO et al. 2019. |
| Comment | This species is not part of the Echinosaura clade fide TORRES-CARVAJAL et al. 2016 although they do not assign it to any other genus. Abundance: only known from its original description (Meiri et al. 2017). Type species: Echinosaura sulcarostrum DONNELLY, MACCULLOCH, UGARTE & KIZIRIAN 2006 is the type species of the genus Rheosaurus VÁSQUEZ-RESTREPO et al. 2019. |
| Etymology | Named after the Latin words sulcus, meaning furrow or groove, and rostrum, meaning snout. |
| References |
|
| External links |