Capable of running on two legs or walking on four, they had a conical thumb spike on each hand.
Give the common name for the type of dinosaur first discovered by Gideon Mantell. One of the best finds was in Bernissart, Belgium. They were about thirty feet long, sixteen feet tall, and weighed five tons. Capable of running on two legs or walking on four, they had a conical thumb spike on each hand. Identify this dinosaur whose name is based on the similarity of its teeth to a particular type of lizard.
Give the common name for the type of dinosaur first discovered by Gideon Mantell.
Iguanodon (accept Iguanadontia or Iguanadontoidea)