Najash is a early genus of snake that lived during the late
Cretaceous period,
about 90 million years ago.
Its
fossils
were found in a terrestrial deposit in the Rio Negro province of
Patagonia in Argentina.
The fact that it was found in a terrestrial deposit, is often cited as evidence
against
Edward D. Cope's
hypothesis that snakes share a common origin with
Mosasaurs
(although a marine origin for snakes seems suggested by other
early snakes that have been discovered:
Eupodophis,
Haasiophis and
Pachyrhachis)
Najash was about 5 feet (1.5 meters) long, and is believed to have
been a burrowing animal. It had two hind legs that seem to be
adapted for burrowing, and also retained its pelvic bones.
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Product Description: High Quality Content by WIKIPEDIA articles! Najash is an extinct genus of basal snake. Like a number of other Cretaceous snakes (see below), it had two hind-limbs. The fossils were found in a land-based deposit, and the robust backbone vertebrae and rear legs of the snake were adapted to a burrowing, subterranean environment. This is significant, as it suggests that snakes had a terrestrial origin, and presents new evidence in the complicated sequences that led to limb reduction and loss as snakes developed from their lizard ancestors. This book was created using print-on-demand technology.
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