Bothriolepis canadensis

Bothriolepis ("pitted scale" or "trench scale") was the most successful of antiarch placoderms, if not the most successful of any placoderm, with over 100 species found on every continent. Bothriolepis was around 30 centimetres (12 in) long.

It lived during the late Devonian period 387–360 million years ago. Because Bothriolepis fossils are found in freshwater sediments, Bothriolepis is presumed to have spent most of its life in freshwater rivers and lakes, but was probably able to enter salt water as well because its range appeared to have corresponded with the Devonian continental coastlines.

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