Results 61 to 70 of about 5,148 (219)

Tracing Ancient Migration Routes: Did Gloydius Pitvipers Disperse Across Paleo‐Tibet Through Temperate and Subtropical Corridors?

open access: yesEcology and Evolution, Volume 16, Issue 9, September 2026.
We investigated the evolutionary and biogeographic history of Himalayan and Hindu Kush Gloydius pitvipers by integrating time‐calibrated phylogenetic analyses with paleoclimatic reconstructions and species distribution modeling. Our results suggest an early Miocene origin in East and Southeast Asia, followed by westward dispersal across Paleo‐Tibet via
Sylvia Hofmann   +6 more
wiley   +1 more source

Descripción del más antiguo Viperidae (Serpentes) de América del Sur [PDF]

open access: yes, 1995
[ES] Se describen los restos vertebrales de un vipérido exhumado de sedimentitas pertenecientes a la "Formación" San Andrés (Pleistoceno temprano) aflorantes en la playa de Santa Isabel, provincia de Buenos Aires, Argentina.
Albino, Adriana M.
core  

Viperidae Oppel 1811

open access: yes, 2019
Viperidae Key to Philippine genera. 1a. Some scales on head strongly keeled (Fig. 24a); second supralabial scale not in contact with scale forming anterior border of heat sensing pit................... Tropidolaemus (p. 34) 1b. Scales on head smooth (Fig.
Weinell, Jeffrey L.   +3 more
openaire   +2 more sources

On the Main Branches of the Pulmonary Artery in Some Viperidae [PDF]

open access: yesBijdragen tot de Dierkunde, 1949
In all snakes, the Boidae and Xenopeltidae excepted, only the right lung is well developed, while the left lung is rudimentary or absent (BUTLER, 1895). The right lung consists of an anterior alveolar part that is strongly vascularized, and of a posterior smooth-walled air-sac that is anangious.
openaire   +2 more sources

Endoparasites of Crotalus tzabcan (Serpentes: Viperidae), with a checklist in rattlesnakes [PDF]

open access: yesJournal of Parasitic Diseases, 2018
The helminth and pentastomid fauna of 50 specimens of Crotalus tzabcan from the Yucatán Peninsula, Mexico is documented. The examination revealed the presence of three nematode species (Hastospiculum onchocercum, Hexametra boddaertii, and Travassosascaris araujoi), and one pentastomid (Porocephalus crotali).
Rubén Alonso, Carbajal-Márquez   +2 more
openaire   +2 more sources

Multilocus phylogeny of the Asian Lance-headed pitvipers (Squamata, Viperidae, Protobothrops)

open access: yes, 2016
Guo, Peng, Liu, Qin, Wen, Tao, Xiao, Rong, Fang, Ming, Zhong, Guanghui, Truong, Nguyen Q., Zhu, Fei, Jadin, Robert C., Li, Cao (2016): Multilocus phylogeny of the Asian Lance-headed pitvipers (Squamata, Viperidae, Protobothrops).
Liu, Qin   +9 more
core   +1 more source

The Ultrastructure of the Spectacle, Cornea and Conjunctiva of the Short‐Nosed Sea Snake Aipysurus apraefrontalis (Elapidae, Squamata) With Particular Reference to the Sub‐Spectacular Space and Its Contents

open access: yesJournal of Morphology, Volume 287, Issue 9, September 2026.
Using micro computed tomography, light microscopy and transmission electron microscopy, this study reveals that the conjunctival portions of the corneal epithelial and spectacular endothelial lining in the eye of the short‐nosed sea snake Aipysurus apraefrontalis possess high densities of microvilli to increase the surface area and two types of ...
H. Barry Collin   +4 more
wiley   +1 more source

A new species of pitviper of the genus Popeia (Squamata: Viperidae) from Pulau Tioman, Pahang, West Malaysia

open access: yes, 2006
Grismer, L. Lee Grismer Jesse L., Mcguire, Jimmy A. (2006): A new species of pitviper of the genus Popeia (Squamata: Viperidae) from Pulau Tioman, Pahang, West Malaysia.
Grismer, L. Lee Grismer Jesse L.   +1 more
core   +1 more source

Características bioquímicas y acción biológica de una hemorragina del veneno de Bothrops brazili

open access: yesAnales de la Facultad de Medicina, 2003
Objetivo: Caracterizar la hemorragina aislada de B. brazili y determinar si el suero antibotrópico polivalente es capaz de neutralizarlo. Material y Métodos: Se ha purificado una hemorragina del veneno de Bothrops brazili a través de dos pasos ...
Martín Isla   +2 more
doaj  

On the type specimens of the recently described Sulawesi pitviper Tropidolaemus laticinctus Kuch, Gumprecht & Melaun 2007 (Squamata: Viperidae)

open access: yes, 2008
Koch, André (2008): On the type specimens of the recently described Sulawesi pitviper Tropidolaemus laticinctus Kuch, Gumprecht & Melaun 2007 (Squamata: Viperidae).
Koch, André
core   +1 more source

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