In 1842, the English naturalist Sir Richard Owen coined the term __________, which in Greek translates to fearfully great lizard.

True or False- Dinosaur fossils have been found on all seven continents.

There are roughly ______ known species of extinct dinosaurs.

True or False-Modern birds are not a kind of dinosaur because they share a common ancestor with non-avian dinosaurs.

______________ are like detectives who examine the evidence that extinct animals left behind.

Everything we know about non-avian dinosaurs is based on __________, which include bones, teeth, footprints, tracks, eggs, and skin impressions.

Paleontologists employ new technologies to solve unanswered questions about dinosaurs and other fossils such as ___________.

The earliest known dinosaurs appeared during the ___________ Period (approximately 250 to 200 million ago).

True or False- Not all dinosaurs lived during the same geological period.

Every non-avian dinosaur went _________ 66 million years ago.

Click the 3 possible causes of the extinction of the dinosaurs.

In most cases, a fossilized bone is actually a _______ made out of minerals, with no trace of the original bone material.

Paleontologists look for ________ preserved in ancient rocks—the fossilized bones, teeth, eggs, footprints, teeth marks, leaves, and even dung of ancient organisms.

True or False-Recent discoveries, however, have unearthed evidence for feathered non-avian dinosaurs.

The Earth is 4.6 ________ years old.

The first dinosaurs evolved around 245 million years ago in the _________ period.

Becoming ________ means that all individuals in a species have died out.

Almost all of the dinosaurs went extinct at the end of the Cretaceous period however some ancient ________, which evolved from a group of dinosaurs called the theropods, managed to survive.

Dinosaurs walk with their legs directly under their bodies similar to most modern ___________.

Click the three correct statements about dinosaurs.

Fossils are the preserved _________ or preserved traces of plants and animals which once lived on Earth.

Click the 3 correct examples of Trace Fossils.

Choose the answer that best fills in each blank about how fossils are created.

1. Animal _________

2. Rapid __________

3. _______ of Soft Parts

4. Build up of sediments

5. Uplift

6. Erosion and _________.