Types of Fossils

These fossils appear very early in the history of Earth.

• Coral
• Fish
• Snail
• Diatoms

A type of simple animal fossil.

• fish
• coral
• diatoms
• crinoid

Common along the coast of Maryland 15 million years ago.

• fish
• coral
• snail
• diatoms

Look like clams but not related.

• snail
• crinoid
• brachiopods
• snail

Tiny protists that still live in the ocean water today.

• fish
• coral
• crinoid
• diatoms

Relatives of starfish.

• fish
• coral
• crinoid
• brachiopods

Horseshoe crabs living today are related to this ancient fossil.

• trilobite
• snail
• fish
• coral

The strong external skeletons of these organisms are easily fossilized. 

• fish
• coral
• diatoms
• snail

The state fossil of Maryland.

• fish
• coral
• snail
• trilobite

Common throughout the Midwestern states. 

• fish
• brachiopods
• diatoms
• crinoid