Fossil Suggests Snakes Evolved on Land

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Fossil Suggests Snakes Evolved on Land

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NEW YORK - A fossil find in Argentina has revealed a two-legged creature that's the most primitive snake known, a discovery that promises to fire up the scientific debate about whether snakes evolved on land or in the sea.

The snake's anatomy and the location of the fossil show it lived on land, researchers said, adding evidence to the argument that snakes evolved on land.

Snakes are thought to have evolved from four-legged lizards, losing their legs over time. But scientists have long debated whether those ancestral lizards were land-based or marine creatures.

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Snake fossil is oldest snake fossil found with a sacrum, a bony feature supporting the pelvis. It suggests that snakes evolved from land, not water.

snakefossil.jpg - 20.34kb
By YCON: posted on 21-4-2006








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