last update: globalnames score not available match type not available. author_text: (Tschudi, ) display_name: Alsophis elegans. Expert(s). Expert: Notes: Reference for: Other Source(s). Source: Snake Species of the World, vol. undetermined, manuscript (version ). Acquired: Cryptocercus matilei Grandcolas, in GBIF Secretariat (). GBIF Backbone Taxonomy. Checklist dataset accessed via.
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Even the derived venom apparatuses of two aleophis the included taxa Atractaspis and Homoroselaps show trenchant differences that are difficult to reconcile with one another and with those of less-derived members of the assemblage.
Alsophis – Wikispecies
The systematics of Rhadinaea Colubridaea genus of New World snakes. Hemipenes slightly bilobed to unilobed and noncapitate; sulcus spermaticus dividing distally, within the capitulum Myers, ; Cadle, b; Zaher, Several recent studies have addressed the classification of caenophidians based on alssophis studies reviewed in the Introduction.
Presence of several large papillae aligned vertically on the lobular crotch alsopnis the proximal region of eegans lobes; enlarged basal nude pocket present with a large associated lobe on the asulcate edge and a much smaller lobe on the sulcate edge. Spines reduced to spinules on the hemipenial lobes Zaher, Phylogenetic relationships among advanced snakes: The monophyly of the Elapoidea is currently supported exclusively by molecular data and further inquiry on its composition is needed.
Alsophis elegans (Tschudi, 1845)
A review of the origin of snakes. Fitzinger explicitly used “Colubroidea” as a family-group name almost in its modern sense.
The broad pattern of relationships indicated by our analysis includes the following main points. We are unaware of any characters that diagnose this clade morphologically. Catalogue of Colubrine snakes of the British Museum. The topological relationships for major clades within each of these groups are broadly concordant among these studies insofar as clades that are strongly supported.
Vertebrata above family [ more like this term ] [ including rank ] [ from this source ]. Subclades within the last two subfamilies have been recognized as tribes.
Alsophis elegans – Serpiente corredora elegante -Elegant racer –
Systematics of snakes of the genus Geodipsas Colubridae from Madagascar, with descriptions of new species and observations on natural history. The phylogenetic affinities and classification of alsophix “advanced” snakes have been a matter of debate for decades.
In alophis, Kelly et al. The classification of the Ophidia. Viviparity; male-biased sexual dimorphism in ventral scale numbers Bailey,; reduced calyces on hemipenial body; relatively distal division of the sulcus spermaticus; vertical or sub-elliptical pupil; Duvernoy’s gland attached to m.
De slangen van de Guyana’s.
Journal of Morphology, Hemipenes bicalyculate; enlarged intrasulcal spines present on each side of the sulcal region; lobular crotch and medial surfaces of the lobes almost completely nude; capitular overhanging edge composed of a thin fringe of tissue. Choanoflagellates and animals above family [ more like this term ] [ including rank ] [ from this source ]. Endoglyptodonta new taxon is a monophyletic group composed of Viperidae Laurenti,Homalopsidae BonaparteElapoidea Boieand Colubroidea Oppel Clade 5.
Within that clade, Uromacer Clade 61 and a clade containing Cuban species of Arrhyton Clade 63 are successive sister groups to Clade 64, which contains all remaining West Indian alsophiines Alsophis, Darlingtonia, Antillophis, Ialtris, Jamaican species of Arrhyton, and Hypsirhynchus. Most importantly, the paraphyletic family Colubridae was redefined as a much more restrictive group, and most of the subfamilies recognized by Zaher were rearranged among various families and superfamilies Pinou et al.
Elapomorphus Wiegmann in Fitzinger Commentary on recent use of the names Colubroidea, Prosymnidae, Pseudaspididae, and Grayiinae Several recent studies have addressed the classification of caenophidians based on molecular studies reviewed in the Introduction. Finally, we conducted a round of TBR using an interactive pass algorithm Wheeler,which applies the information of the three adjacent nodes to perform a three dimensional alignment optimization for the target node.
The colubrid radiation in Africa Serpentes: The palato-maxillary arch in some Asiatic Dipsadinae Serpentes. Taxonomy of American xenodontine snakes: However, we feel that some of their formally recognized taxa are only weakly supported by their molecular data, or receive conflicting phylogenetic signals in different data sets.
Furthermore, most of the morphological characters adduced for this group e. Data exploration in phylogenetic inference: Aldophis snakes of North America and their relationships within Caenophidia, using likelihood-based Bayesian methods on mitochondrial sequences. Our results are consistent with these studies on both Causus and Azemiops. On the other hand, Vidal et al.
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