Michael Caldwell

With four tiny legs and an extraordinarily long body, a fossil of the snake-like lizard Tetrapodophis amplectus has created controversy. (Julius Csotonyi)

A fossil of a snake‑like lizard has generated controversy beyond its identity

In 2015, a published article described the fossil of a four-legged snake. New research has revealed that it is in fact a lizard, and the fossil is the centre of a scientific ethics debate.

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