O R M T H O P O D <Ormthopod seems like a typo>

FREQUENCY:  Common
NO. APPEARING:  2-40
ARMOR CLASS:  6
MOVE:  12? to 18?
HIT DICE:  1 hp to 13 HD
NO. OF ATTACKS:  1 (kick or bite)
DAMAGE/ATTACK:  Nil to 2-16
SPECIAL ATTACKS:  Trample
SPECIAL DEFENSES:  Nil
INTELLIGENCE:  Animal
SIZE:  S to L (up to 45? long)

Ornithopods are a diverse group of ornithiscian dinosaurs, They
may be found in Triassic, Jurassic, and Cretaceous landscapes and
may range from rabbit- or chicken-sized to mammoth-sized, although the largest forms are found in the Cretaceous. All are
herbivorous and bipedal, though some may be partly omnivorous
and most go down on all fours at times. Most also have a beak
used to crop vegetation. The ornithopods are inoffensive and
usually seek to escape if attacked, unless they are defending their
young and eggs. If they retaliate, they use either a bite (some of
the smaller forms do this) or a powerful and well-aimed kick.
They vary with size as shown below:
 
MOVE:  12" 12" 15" 18" 15" 12"
HIT DICE:  to 1/4 1/2 1 2 5-8 9-13
DAMAGE:  Nil 1-2 1-4 1-6 2-12 2-16
SIZE:  S(to 5) M(6) M(7-8) M(9-10) L(16-25) L(26-45)

Triassic ornithopods do not exceed ¼ HD, while Jurassic ornithopods do not exceed 8 HD. The ornithopods include creatures
with thick helmetlike skulls that allow them to rush heedlessly
through the forest without getting brain damage from hitting
trees. They also include types that have spikes on their thumbs
(Iguanodon  is an example), weapons which are not effective
against smaller foes like humans. Most prominent is a Cretaceous
group that includes the largest members and which is characterized by various bizarre crests and bumps on the head. These last
include  Lambeosaurus  and  Anatosaurus,  the latter also being
known as Hadrosaurus and Trachodon,  the best known of all the
so-called ?duck-billed? dinosaurs).

Dinosaurs +