Ardeosaurus is an extinct genus of basal lizards, known from fossils found in the Late Jurassic Solnhofen Plattenkalk of Bavaria, southern Germany.

Ardeosaurus was originally considered to be a distant relative to modern geckos, and had a similar physical appearance, though more modern phylogenetic analysis has shown it to be a basal squamate outside the crown group of all living lizards and snakes. It was around 20 centimetres (7.9 in) long, with a flattened head and large eyes. It was probably nocturnal, and had jaws specialized for feeding on insects and spiders.

The Land Before Time

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In The Land Before Time III: The Time of the Great Giving, an Ardeosaurus is briefly seen sitting on a rock.
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