Acanthodian

The people listed below were born in, residents of, or otherwise closely associated with the city of Martinsburg, West Virginia. ...
Found on http://en.wikipedia.org/wiki/Acanthodian

Acanthodian

Acanthodians were the earliest jawed vertebrates. These early fish (Class acanthodii) lived from the Ordovician to the Carboniferous period. Although most Acanthodians were small, averaging roughly 5-6 inches (13-15 cm) long, some were much larger (for example, the genus Xylacanthus, known from its huge jaws, is thought to have been perhaps 3 feet ...
Found on http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
No exact match found