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box of misc Trilobites & Fossils

$150.00

Flat of 16 small Trilobites, 20+ fossils (Tusk Tip, shark teeth, Crinoid head) approx 50 pcs total.

SKU: RNBFL-BX34 Categories: , Tags: , ,

Description

Trilobites are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambriam Period (521 million years ago) and they flourished throughout the lower Paleozoic before slipping into a long decline, when, during the Devonian, all trilobite orders except the Proetida died out. The last extant trilobites finally disappeared in the mass extinction at the end of the Permian about 252 million years ago. Trilobites were among the most successful of all early animals, existing in oceans for almost 270 million years, with over 22,000 species having been described.

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