Ancient Seas, Morocco, Hamar Laghdad Formation, Devonian period, ca. 419.2 to 358.9 Million years ago. A fossilized Harpes trilobite within a stone matrix! This "sea bug" has been prepared with the cephalon slightly raised above and out from the surrounding matrix, as if still scuttling across the ocean floor as it once did! The Harpes genus is characterized by the wide, semicircular brim that protected the cephalon head. The projecting genal spines at the side of the cephalon, are nearly as long as the rest of the body and were thought to act as protection like side armor when these creatures rolled into defensive balls. The dark surface of this trilobite contrasts beautifully with the white stone matrix and is a remarkable specimen to add to any fossil collection! Size of fossil: 1.675" L x 1.25" W (4.3 cm x 3.2 cm); matrix: 3.5" L x 3" W x 1.3" H (8.9 cm x 7.6 cm x 3.3 cm); case: 4.125" L x 4.125" W x 3.25" H (10.5 cm x 10.5 cm x 8.3 cm)
Trilobites are a fossil group of extinct marine arthropods that 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 Cambrian period (521 million years ago), and they flourished throughout the lower Paleozoic era before beginning a drawn-out decline to extinction when, during the Devonian, all trilobite orders except the Proetids died out. Trilobites 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, roaming the oceans for over 270 million years!
Provenance: ex-Stein collection, Bloomfield Hills, Michigan, USA, acquired prior to 2010
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#164338
Condition
Repaired with infill or restoration along break lines. Break lines across end of body and extend across left side of cephalon and left brim and tip of left spine reattached. Tip of right spine reattached. Matrix repaired from 4 pieces with faint break lines visible. Displayed in acrylic case.