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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Animalia unranked [ more like this term ] [ including rank ] [ from this source ].
This deletion is one additional arginine indel that occurred in the same three-arginine region. However, as ours is the taxonomically most comprehensive study of these groups, the placement of many taxa is here elucidated for the first time. We name as new two higher taxonomic clades within Caenophidia, one new subfamily within Dipsadidae, and, within Xenodontinae five new tribes, six new genera and two resurrected genera.
Molecular Biology and Evolution, Another possible explanation is the amplification of a paralogous gene for this group of species. Direct optimization parsimony analysis resulted in a well-resolved phylogenetic tree, which corroborates some clades identified in previous analyses and suggests new hypotheses for the composition and relationships of others.
Alsophis elegans (Tschudi, 1845)
Phylogenetic relationships among vipers: Viviparity and male-biased sexual dimorphism have evolved repeatedly in colubroids, but are here considered derived characters of Tachymenini. Some classifications are local ; most come from GlobalNames. Increasing gene sampling in a reduced taxon sample can actually reinforce long branch attraction or repulsionand increasing the taxon sampling density will at least apsophis reveal unstable clades within a phylogenetic analysis.
The snake family Psammophiidae Reptilia: A new genus for South American snakes related to Rhadinaea obtusa Cope Colubridae and resurrection of Taeniophallus Cope for the “Rhadinaea” brevirostris group. The phylogeny and classification of caenophidian snakes inferred from seven nuclear protein-coding genes.
Class Reptilia turtles, snakes, lizards, and relatives. The Galapagos snakes have a hemipenial morphology that is not only closer in most respects to that of Alsophis elegans, but it also departs significantly from the hemipenial patterns shown by the West Indian species of Alsophis and the genera Philodryas and Antillophis.
Pseudalsophis elegans | The Reptile Database
Proceedings of the Zoological Society of London, The origin of the New World proteroglyphous snakes and its bearing on the study of venom delivery systems in snakes. Osteichthyes superclass [ more like this term ] [ including rank ] [ from this source ].
Psammophis elegnas Schlegel,by original designation. Iterative pass optimization of sequence data.
Alsophis elegans – Serpiente corredora elegante -Elegant racer –
Alethinophidia infraorder [ more like this term ] [ including rank ] [ from this source ]. Zoologische Mededelingen 48 Craniata unranked [ more like this term ] [ including rank ] [ from this source ].
Animalia kingdom [ more like this term ] [ including rank ] [ from this source ] Chordata phylum [ more like this term ] [ including rank ] [ from this source ] Reptilia class [ more like this term ] [ including rank ] [ from this source ] Squamata order [ more like this term ] [ including rank ] [ from this source ] Colubridae family [ more like this term ] [ including rank ] [ from this source ] Taeniophallus genus [ more like this term ] [ including rank ] [ from this source ] Taeniophallus occipitalis species [ more like this term ] [ including rank ] [ from this source ] last update: However, the sequence trace did not show any signal that could indicate a pseudogene contamination sequence ambiguities, double peaks, noise, etc.
Hemipenis slightly bilobed, noncapitate, and bicalyculate or semicalyculate; lobes with spinulate calyces distally and spinulate flounces proximally Zaher, Only one gene sequence, c-mos, was available for Pseudoxenodon and this may be responsible for the lability of its position in different trees. The Animal Diversity Web is an educational resource written largely by and for college students.
A summary of snake classification. Our results corroborate Lawson et al. Molecular phylogeny and systematics of the pseudoxyrhophiine snake genus Liopholidophis Reptilia, Colubridae: Colubroids can be diagnosed by the presence of well-developed calyces present on the hemipenial lobes, a centrifugal sulcus spermaticus that divides on the proximal or central eleyans of the hemipenial body and an aglyphous dentition.
The latter is nested within Clade alsopuis as the more derived terminal. Pseudoxenodon karlschmidti Pseudoxenodontinae McDowell, Phylogeny of the rattlesnakes Crotalus and Sistrurus inferred from sequences of five mitochondrial DNA genes.
Clades 10 and 19 were recovered by Lawson et al.