A silhouette showing the jaw of Sphenovipera in medial view
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Reptilia
Order:
Rhynchocephalia
Family:
Sphenodontidae
Genus:
†Sphenovipera Reynoso, 2005[1]
Species
†S. jimmysjoyi Reynoso, 2005
Sphenovipera jimmysjoyi is an extinct species of sphenodontian dated from the Middle Jurassic.[1][2] If was discovered in the lower part of the La Boca Formation located in Tamaulipas, Mexico.[1] Only the lower jaw of this organism has been discovered and studied.[1] It is possibly the only species of rhynchocephalian yet discovered to show evidence of venom delivery.[1]
^ abcdefReynoso, Victor-Hugo (September 2005). "Possible evidence of a venom apparatus in a Middle Jurassic Sphenodontian from the Huizachal Red Beds of Tamaulipas, Mexico". Journal of Vertebrate Paleontology. 25 (3): 646–654. doi:10.1671/0272-4634(2005)025[0646:PEOAVA]2.0.CO;2.
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Sphenovipera jimmysjoyi is an extinct species of sphenodontian dated from the Middle Jurassic. If was discovered in the lower part of the La Boca Formation...
durophagous, with the tooth plates being used to crush hard shelled organisms. Sphenovipera from the Jurassic of Mexico has been suggested to have been venomous...
derived taxon include Homoeosaurus, Pamizinsaurus, Ankylosphenodon, the Sphenovipera+Theretairus clade, and pleurosaurs. A 2017 study utilizing both parsimony...
lesser degree of the type have linked the taxon to the Mexican taxon Sphenovipera. The anterior border of the symphysis is steeply inclined in the holotype...
sphenodontian taxa like Cynosphenodon huizachalensis and the possibly venomous Sphenovipera jimmysjoyi, the primitive diapsid Tamaulipasaurus morenoi, the primitive...