|
 |
Dinosaur and Paleontology Dictionary |
 |
|||||
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
EON Two or more geological eras form an Eon, which is the largest division of geologic time, lasting many hundreds of millions of years. |
ERA Two or more geological periods comprise an era, which is hundreds of millions of years in duration. |
PERIOD The period is the basic unit of geological time in which a single type of rock system is formed, lasting tens of millions of years. |
EPOCH An epoch is a division of a geologic period; it is the smallest division of geologic time, lasting several million years. |
AGE An age is a unit of geological time which is distinguished by some feature (like an Ice Age). An age is shorter than epoch, usually lasting from a few million years to about a hundred million years. |
|
|
Dinosaur and Paleontology Dictionary |
|
|||||
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Enchanted Learning®
Over 35,000 Web Pages
Sample Pages for Prospective Subscribers, or click below
|
Overview of Site What's New Enchanted Learning Home Monthly Activity Calendar Books to Print Site Index K-3 Crafts K-3 Themes Little Explorers Picture dictionary PreK/K Activities Rebus Rhymes Stories Writing Cloze Activities Essay Topics Newspaper Writing Activities Parts of Speech Fiction The Test of Time
|
Biology Animal Printouts Biology Label Printouts Biomes Birds Butterflies Dinosaurs Food Chain Human Anatomy Mammals Plants Rainforests Sharks Whales Physical Sciences: K-12 Astronomy The Earth Geology Hurricanes Landforms Oceans Tsunami Volcano |
Languages Dutch French German Italian Japanese (Romaji) Portuguese Spanish Swedish Geography/History Explorers Flags Geography Inventors US History Other Topics Art and Artists Calendars College Finder Crafts Graphic Organizers Label Me! Printouts Math Music Word Wheels |
Click to read our Privacy Policy
| Search the Enchanted Learning website for: |