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The Gaboon viper (Bitis gabonica), also called the Gaboon adder, is a large and highly venomous viper species found in the rainforests and savannas of sub-Saharan Africa. [ 1 ] [ 3 ] [ 2 ] Like all other vipers, it is venomous .
Vipera berus, also known as the common European adder [3] and the common European viper, [4] is a species of venomous snake in the family Viperidae. The species is extremely widespread and can be found throughout much of Europe , and as far as East Asia . [ 2 ]
The venom glands are relatively small. Unlike most vipers, Fea's viper is oviparous and hibernates during the winter. [3] The color pattern of Fea's viper is striking; dorsally, its basic body color is a shiny, deep blue-gray to black, marked by several widely spaced, thin (one or two scales), white-orange crossbands.
Macrovipera lebetinus, known as the blunt-nosed viper, Lebetine viper, Levant viper, [3] and by other common names, is a viper species found in North Africa, much of the Middle East, and as far east as Kashmir. Like all other vipers, it is venomous. Five subspecies are currently recognized, including the nominate race described here. [4]
Atheris hispida is a viper species endemic to Central Africa. Like all other vipers, it is venomous. It is known for its extremely keeled dorsal scales ("spikes") that give it a bristly appearance. [3] No subspecies are currently recognized. [4] Common names include rough-scaled bush viper, spiny bush viper, [5] [3] hairy bush viper, [3] [6 ...
The Crotalinae, commonly known as pit vipers, [2] [3] or pit adders, are a subfamily of vipers found in Asia and the Americas. Like all other vipers, they are venomous.They are distinguished by the presence of a heat-sensing pit organ located between the eye and the nostril on both sides of the head.
Megaevolution has been extensively debated because it has been seen as a possible objection to Charles Darwin's theory of gradual evolution by natural selection. [1] A list was prepared by John Maynard Smith and Eörs Szathmáry which they called The Major Transitions in Evolution. [2] [3] On the 1999 edition of the list they included:
Echis ocellatus, known by the common names West African carpet viper [2] [3] and ocellated carpet viper, [4] is a highly venomous species of viper endemic to West Africa. No subspecies are currently recognized. [5] It is responsible for more human fatalities due to snakebite than all other African species combined. [6]