نتایج جستجو برای: sauria
تعداد نتایج: 375 فیلتر نتایج به سال:
A comprehensive analysis of amniote interrelationships is presented in an attempt to test turtle interrelationships. The results refute earlier hypotheses that turtles are related to parareptiles, i.e. to procolophonids or pareiasaurs. Instead, turtles are shown to be the sistergroup of Sauropterygia, the two clades being nested within Sauria as sister-group of Lepidosauriformes. This scenario ...
The monophyletic species subgroup of Podarcis tauricus is distributed in the western and southern parts of the Balkans, and includes four species with unresolved and unstudied inter- and intra-specific phylogenetic relationships. Using sequence data from two mitochondrial and three nuclear genes and applying several phylogenetic methods and species delimitation approaches to an extensive datase...
The genus Tropiocolotes comprises small, naked toed, ground dwelling and nocturnal desert geckos, ranging from Morocco and Mauritania in northern Africa to south and central Arabia as well as coastal Iran. Herein, we describe a new species of the genus Tropiocolotes from western Iran based on five specimens from Nayband region. This new taxon is described with a statistical approach based on 34...
Understanding the phylogenetic position of crown turtles (Testudines) among amniotes has been a source of particular contention. Recent morphological analyses suggest that turtles are sister to all other reptiles, whereas the vast majority of gene sequence analyses support turtles as being inside Diapsida, and usually as sister to crown Archosauria (birds and crocodilians). Previously, a study ...
We present DNA-hybridization data on 21 amniotes and two anurans showing that discrimination is obtained among most of these at the class and lower levels. Trees generated from these data largely agree with conventional views, for example in not associating birds and mammals. However, the sister relationships found here of the monotremes to marsupials, and of turtles to the alligator, are surpr...
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