Eurypterids: Pioneers Of The Land

408 ml. years back. Early Devonian Period of the Palaeozoic Era. East coasts of the continent of Lavrussiya (territory of modern Baltic). In those far times Earth was almost not manned. Since the end of the ordovician period when began the next freezing. The seas receded, baring the huge land areas which were once coral reef. And animals will not will had to adapt to new conditions of dwelling. Eurypterids the arthropods living in a tidal drain zone of the ancient seas were one of the first. They became pioneers of the new world. Eurypterids prospered in the Silurian period and lived up to the end Devonian. In a picture two Dolichopterus stoermeri which are scurrying about in a coastal zone in search of food are presented. In food they weren’t choosy and were content with that will find ashore after inflow: dead fish, cephalopods and similar which were lucky less. This strategy of a survival as it is possible I was suitable for the new world better.

Eurypterus, the most commonly found eurypterid fossil and the first eurypterid genus to be described

Except arthropods since the Silurian period plants started winning the land. Centimeter behind centimeter selecting a place in the sun at the stony desert. The first plants covered with a green carpet no more than 30 centimeters high of the coast of the seas, lakes and mouths of the rivers. In a picture the small part of flora of the early and Devonian period of Lavrussiya is presented. In the foreground at the left Aglaophyton, behind it Sawdonia, and from the right of Horneophyton, growing along the coast.

Only at the end silura-the beginning of Devon it was possible to see big columns up to 8 meters high, growing along coast of reservoirs. These are Prototaxites mushrooms. It is the only time in the history of Earth when mushrooms reached such huge sizes, doing a surrounding landscape similar to a landscape of other planet.

 

Source: Pioneers of the land. by Plioart on DeviantArt

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