|Azemiops feae. Notice the enlarged head scales |
and the absence of a heat-sensing facial pit.
|This specimen's head shows more than the usual amount|
of white. In preservative, the head turns completely white,
causing some to call them "White-headed Vipers".
|Plate from Boulenger's 1888 Account of the Reptilia obtained in Burma, |
north of Tenasserim, by M. L. Fea, of the Genova Civic Museum
|Skull of a Fea's Viper, showing the solenoglyphous fang,|
the definitive viper characteristic.
1 The genus Causus consists of six species of viper from sub-Saharan Africa commonly known as night adders. Night adders were once considered the most primitive vipers due to their round pupils and enlarged head scales, which is why Boulenger found them remarkable. They are oviparous and are now known to be more closely related to viperines than to Azemiops and crotaline vipers. Look out for an article on them up here one day!↩
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Boulenger, G. A. 1888. An account of the Reptilia obtained in Burma, north of Tenasserim, by M. L. Fea, of the Genova Civic Museum. Annali del museo civico di storia naturale di Genova, Seria 2 6:593-604
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Utkin, Y. N., C. Weise, I. E. Kasheverov, T. V. Andreeva, E. V. Kryukova, M. N. Zhmak, V. G. Starkov, N. A. Hoang, D. Bertrand, J. Ramerstorfer, W. Sieghart, A. J. Thompson, S. C. R. Lummis, and V. I. Tsetlin. 2012. Azemiopsin from Azemiops feae viper venom, a novel polypeptide ligand of nicotinic acetylcholine receptor. Journal of Biological Chemistry 287:27079-27086 <link>
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