Living Fossils
Eurypterids.net
SITE INDEX
LIVING FOSSILS
Ginkgo biloba (Maidenhair Tree)
Metasequoia glyptostroboloides
(Dawn Redwood)
Equisetum (Horsetail Plant)
Two "living fossils" from friends' back yards and one, the Ginkgo, taken from a city street.  What irony! While we are decimating forests all over this planet, and wiping out many animal species--at the same time we are preserving within our cities some of the forms that were sure to go extinct.
WHAT IS A "LIVING FOSSIL?"
A "Living Fossil" is simply a form living today, plant or animal, that has managed to survive millions of years (of evolution) without a lot of change in form or function.  For example, the small, infaunal, Linglula (an inarticulate brachiopod), has been around for at least 500 million years in one form or another.. They appear today, essentially, as they appeared those millions of years ago.
             MORE GINKGO