| Term | Definition |
|---|
| Therapod | Two legged, Three Toed, Perfectly balanced dinosaurs. Normally carnivores |
| Sauropods | Large, Long Necked, Long Legged Herbivores |
| Ceratopsians | Herbivores with a large frill of bone behind thier heads. |
| Raptors | Specialized therapods with a single large retractable claw on each foot. |
| Ordovician | The period when the rocks under stewartville were formed |
| Brachiopods | Clam Like fossils whose name means "Arm Foot" |
| Gastropods | The family of fossils that snails belong to whose name means " Stomach Foot" |
| Cephalopods | The name of the family that ancient squids belonged to whose name means " Head Foot" |
| Extinction | When large numbers of organisms disappear from existance |
| Asteriod | This large visitor from space can cause extinctions by blocking out the sun |
| Volcano | This natural feature can cause extinctions by changing the air on earth slowly or by causing the sun to be blocked out quickly |
| Ice Age | The advance of these cooler periods in earth's history can cause extinctions if they happen to rapidly |
| Index Fossil | A fossil that can be used to link a layer of rock to a particular time span |
| Trace Fossil | This type of fossil shows evidence of past life but is not part of the organism |
| Body Fossil | This type of fossil shows evidence of past life and represents part of the actual organism |
| Ice | This is a cool way to preserve a fossil |
| Amber | This sticky tree sap can incase organisms and preserve them as fossils |
| Tar | This black, sticky, substance can trap animals and preserve them as fossils |
| Burial | This is the most common way fossils are preserved |
| Cast | A fossil that is preserved as 3D representation of the original organism |
| Mold | A fossil that is a depression left behind in the shape of the original organism |
| Trilobite | This is Minnesota's State fossil |
| Hadrosaurs | These duck-billed dinosaurs are some of the first dinosaurs to chew thier food |
| Dinosaur | Terrible Lizard |
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