Can You Tell A Triceratops From A Protoceratops?Book - 2014
Discusses the differences between a triceratops and a protoceratops, including the type of neck frill, number of horns, and period in which they lived.
Publisher: Minneapolis, Minn. : Lerner Publications Company, 
Copyright Date: ©2014
Branch Call Number: JE 567.912 SILVERM
Characteristics: 32 pages : color illustrations ; 27 cm