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Sanajeh

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Sanajeh model

A model of Sanajeh in a sauropod nest

Sanajeh ("ancient gape" in Sanskrit[1]) is a madtsoiid snake from the Late Cretaceous of India.

DescriptionEdit

Based on the length of its skull (95 mm), Sanajeh may have measured 3.5 meters in length from head to tail. Its vertebrae have well-developed articulations, which is a common feature of all madtsoiid snakes.[2]

ClassificationEdit

Sanajeh is a member of the family Madtsoiidae, which also includes two Australian genera of extinct snake that lived in the Cenozoic. Below is a cladogram based on the 2010 description of Sanajeh showing its relationship with other snakes:[3]

Serpentes 

Scolecophidia



Najash rionegrina




Dinilysia patagonica


 Alethinophidia 


Anilius




Cylindrophis




Uropeltinae



Anomochilus






 Madtsoiidae 

Sanajeh indicus




Wonambi



Yurlunggur






Loxocemus


 Macrostomata 

Pachyophiidae





Ungaliophinae




Erycinae




Pythonidae



Boinae







Bolyeriidae




Tropidophiinae




Acrochordus



Colubroidea












DiscoveryEdit

The skull, jaws, and vertebrae of Sanajeh were discovered in rocks of the Maastrichian-age Lameta Formation in Gujarat, India. The fossils were described in 2010.[3]

PaleobiologyEdit

DietEdit

Sanajeh was found preserved next to a clutch of eggs from a sauropod dinosaur, and coiled next to a crushed egg. The snake was probably preying on the clutch and eating the hatchling dinosaurs.[3]

ReferencesEdit

  1. Yong, Ed (2010). "Sanajeh, the snake that ate baby dinosaurs".
  2. Scanlon, J.D. (2006). "Skull of the large non-macrostomatan snake Yurlunggur from the Australian Oligo-Miocene". Nature 439 (7078): 839–842. doi:10.1038/nature04137. PMID 16482156.
  3. 3.0 3.1 3.2 Wilson, J.A.; Mohabey, D.M.; Peters, S.E.; and Head, J.J. (2010). "Predation upon Hatchling Dinosaurs by a New Snake from the Late Cretaceous of India". In Benton, Michael J. PLoS Biology 8 (3): e1000322. doi:10.1371/journal.pbio.1000322. PMC 2830453. PMID 20209142.

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