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Gingko tree-lined highway, Japan

Gingko tree-lined highway, Japan

Joggins Fossil Cliffs in Joggins, NS - Suggested by: Stephanie McQuaid, Jane Whitten. Photo by gorbould, via Flickr

Joggins Fossil Cliffs in Joggins, NS - Suggested by: Stephanie McQuaid, Jane Whitten. Photo by gorbould, via Flickr

Bat Green River Formation - I have dug at the Green River Formation, (Wyoming) many times....Love it!!

Bat Green River Formation - I have dug at the Green River Formation, (Wyoming) many times....Love it!!

We have been taught that each of the Earth's strata layers were deposited over millions of years.  OK, if that's true we could never expect to see a tree trunk buried vertically extending through multiple strata layers, could we?  But we do see them - all over the world.  These are called polystrate trees.  Fossils crossing two or more sedimentary layers (strata) are called poly-strate (many-strata) fossils.

We have been taught that each of the Earth's strata layers were deposited over millions of years. OK, if that's true we could never expect to see a tree trunk buried vertically extending through multiple strata layers, could we? But we do see them - all over the world. These are called polystrate trees. Fossils crossing two or more sedimentary layers (strata) are called poly-strate (many-strata) fossils.

Fish fossil

Fish fossil

"You could see a human footprint like this today on any beach or patch of mud. But this footprint -- clearly from the anatomy of a modern human being -- is fossilized in stone estimated to be about 290 million years old."

"You could see a human footprint like this today on any beach or patch of mud. But this footprint -- clearly from the anatomy of a modern human being -- is fossilized in stone estimated to be about 290 million years old."

Ginkgo bilboa Fossil Plant Leaf

Ginkgo bilboa Fossil Plant Leaf

Fossil spider inside amber

Fossil spider inside amber

FOSSIL FISH WITH PALM FLOWER Priscacara serrata Eocene, Green River Formation Wyoming, USA

FOSSIL FISH WITH PALM FLOWER Priscacara serrata Eocene, Green River Formation Wyoming, USA

The Largest Fossil Spider Ever Found -- Photo courtesy of the University of Kansas.

The Largest Fossil Spider Ever Found -- Photo courtesy of the University of Kansas.