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Glossary of Terms

Acrocanthosaurus

genus of Cretaceous theropod dinosaur

Ankylosaur

a Cretaceous armored dinosaur

Arthropod

invertebrates that are members of the phylum Arthropoda, including shrimp, crabs, and insects, to name a few

Cretaceous

the last geological time period of the Mesozoic Era

Crustacean

a large grouping within the phylum Arthropoda, that includes shrimp, crabs and lobsters

Invertebrate

an animal without a backbone

Manus

The distal portion of the fore limb (the hand)

Meniscate

A crescent-shaped structure

Metatarsal

The long bones of the foot between the ankle bones and the toes

Ornithomimosaur

a Cretaceous theropod dinosaur that might have looked something like a modern ostrich

Ornithopod

bipedal, herbivorous dinosaurs that includes the iguanodonts and duck-billed dinosaurs, among others

Pes

the distal portion of the hind limb (the foot)

Trace fossil

a fossil footprint, burrow, trail, etc.; a fossil that represents the interaction of an organism with the substrate

Tenontosaurus

a genus of ornithopod dinosaur

Theropod

a bipedal, meat-eating dinosaur