1. Open Court Vocabulary for
“Dinosaur Fossils”
Genre: Expository Text

2. ( hardened remains of an animal or plant that lived long ago )
fossils
( hardened remains of an animal or plant that lived long ago )
Fossils are what are left of a plant or animal that lived a long time ago.

3. hardened
( became solid )
Some fossils are hardened footprints and some are hardened plant imprints.

4. extinct
( no longer living )
Scientists must learn about dinosaurs from fossils because dinosaurs are extinct.

5. ( people who study things in nature )
scientists
( people who study things in nature )
Some scientists, people who study things in a careful way, dig for fossils. They are called paleontologists.

6. difficult
( not easy )
Putting a dinosaur skeleton together is difficult when some of the bones are missing.