Chalk main content.

Chalk

Chalk_HERO

Exhibition Text

This sample is from the chalk beds of southern England.  It is made of the fossil shells of microscopic marine organisms known as foraminifera.  These were deposited on the seafloor 65 to 140 million years ago.

AMNH collection

For Educators

Topic: Earth Science

Subtopic: Minerals and Resources

Keywords: Mollusks, Fossil, Foraminifera, Chalk, Mineralogy

Audience: General