Ancient Seas, United States, Oklahoma, Coal County, Haragan Formation, ca. Devonian period, ca. 419.2 to 358.9 Million years ago. A wonderful fossilized trilobite on display and encased in a stone matrix. This "sea bug" is a member of the genus Huntoniatonia (Huntonia) lingulifer, distinguished by the tail like pygidial spine and small protrusion on the cephalon head. Huntoniatonia are a rare species found only in the Haragan and Bois D'Arc Formations of Oklahoma. This trilobite has been prepared with the genal spines freestanding from the matrix. Note the remarkable texture preserved on the schizochroal eye lens! Size of trilobite: 1.5" L x 0.75" W (3.8 cm x 1.9 cm); matrix: 2.25" L x 1" W x 2.375" H (5.7 cm x 2.5 cm x 6 cm); case: 3.125" L x 3.125" W x 3.375" H (7.9 cm x 7.9 cm x 8.6 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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#164693

Restoration and infill along left eye lobe, left genal spine, pygidial spine, and across hairline fissure on lower body. Loss to tip of genal spine and pygidial spine. Restoration to matrix and plaster added to verso to reinforce matrix. Displayed in acrylic case.