| when continents collide: phylogeny, historical biogeography and systematics of the medically important viper genus echis (squamata: serpentes: viperidae). | we analyze the phylogeny of the medically important and taxonomically unresolved viper genus echis using four mitochondrial gene fragments. the results show that the populations of the genus fall into four main clades: the echis carinatus, e. coloratus, e. ocellatus and e. pyramidum groups. the e. pyramidum and e. coloratus groups are sister taxa but the interrelationships of this clade and the e. ocellatus and e. carinatus groups are unresolved. the initial divergence of the genus appears to co ... | 2009 | 19666129 |
| report of a bite from a new species of the echis genus--echis omanensis. | carpet vipers (echis) are found across the semiarid regions of west, north, and east africa; west, south, and east arabia; parts of iran and afghanistan north to uzbekistan; and in pakistan, india, and sri lanka. recently, a new species belonging to the echis genus, echis omanensis has been recognized in oman. not much is known about the clinical manifestations of envenomation from its bite. | 2015 | 25403810 |