Direct dating of fossils

Lepidodendron is famous for its unmistakable scale-like bark.The plant was anchored at the base not by a deep root system, but by several shallow running Y-shaped branches called stigmaria.The first evidence of land plants emerging comes by way of fossilized spores dating back to the Ordovician Period, 510 - 439 million years ago.

Their branches were draped with long, grass-like foliage of spirally arranged leaves and cones containing spores.

The first real trees and seed-bearing gymnosperms are developed by the end of this era. A little later, the coal forests which date back to the Carboniferous Period, leave behind a plethora of spectacular plant fossils displaying an abundance and diversity of flora.

Devonian forests are known from fossil deposits in New York, U. During the Carboniferous Period, a large portion of Europe and North America was on the equator.

That is the conclusion of an international team of scientists. Little Foot is the only known virtually complete Australopithecus fossil discovered to date.

It is by far the most complete skeleton of a human ancestor older than 1.5 million years ever found. Three seemingly unrelated praying mantis groups inhabiting Cuba and the rest of the Greater Antilles actually share an ancient African ancestor and possibly form the oldest endemic animal lineage on ...

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