Central Europe, Poland, Holy Cross Mountains, Kowala Formation, Middle Devonian (Givetian), ca. 394.5 to 389.1 million years ago. A large museum-class shale matrix containing sizable Atrypa brachiopod fossils assembled across the surface. There are over 50 lab-cleaned Schizophoria and Mucrospirifer brachiopods with valves closed and intact. These three-dimensional shells are arranged as a colony, much as how they would have been grouped in life. Most brachiopod fossils measure less than 0.25 inches (0.635 cm) across, while this display contains many that are about 1 inch (2.5 cm)! This is a great specimen since most brachiopod fossils are small and in a raw fossilized state without the painstaking preparation that these underwent: each brachiopod was extracted from the host rock and cleaned with pneumatic tools and air abrasives, to recover their natural Atrypa shell anatomy, then set piece of original Devonian shale. Size (brachiopod fossils): 0.9" L (2.3 cm) to 1" L (2.5 cm); (matrix): 23" L x 13" W (58.4 cm x 33 cm)
This species of Schizophoria, of the middle Devonian era, is found in the Holy Cross Mountains in Poland. These mountains are a site dating back to the time of the world's oldest tetrapod footprints ever found - fossil evidence of the first existence of four-legged vertebrates walking on land. This is a large and very impressive display specimen of Devonian brachiopods, noteworthy for their famous scientific site in paleontology! Brachiopod fossils are often neglected in fossil collections despite the important role they played in the history of life on our planet. Most brachiopod fossils we see are in their raw state and somewhat unattractive. Professionally cleaning these invertebrates reveals their highly detailed and aesthetic anatomy in their shells yet, if not properly prepared in a lab, they look little more than rocks. Each of these brachiopods were extracted from the host rock and cleaned with pneumatic tools and air abrasives, the end result is this beautiful brachiopod fossil colony of substantial size, each specimen is of the finest preservation and fully lifelike with 3D detail!
Provenance: ex-private Dutch collection before 2004
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#172846
Condition
Professionally excavated, cleaned, assembled, and attached on Devonian shale matrix. Brachiopods are complete without any restoration or repairs.