Anthracosaurus
Anthracosaurus is an extinct genus of embolomere, a possible distant relative of reptiles that lived during the Late Carboniferous in what is now Scotland and England. It was a large, aquatic eel-like predator able to grow up to 3 m in length. It has a robust skull about in length with large teeth in the jaws and on the roof of the mouth. Anthracosaurus probably inhabited swamps, rivers and lakes. Its name is Greek for "coal lizard".
The genus was named by Thomas Henry Huxley when James Russell, a mining surveyor, sent him the first specimens.
