Hylonomus

(pronounced high-LON-oh-mus) Hylonomus is one of the earliest-known reptiles; it was NOT a dinosaur. Hylonomus was about 8-12 inches (20-30 cm) long and looked much like a modern-day lizard. It had a long tail, a short neck, and a deep skull with conical teeth (the front teeth were longer than the back teeth). It has a typical reptilian sprawling l...
Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/

Hylonomus

Hylonomus (s; hylo- `forest` + nomos `dweller`) is an extinct genus of reptile that lived 312 million years ago during the Late Carboniferous period. It is the earliest unquestionable reptile (Westlothiana is older, but in fact it may have been an amphibian, and Casineria is rather fragmentary). The only species is the type species Hylonomous ...
Found on http://en.wikipedia.org/wiki/Hylonomus
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