Fossil Crinoid & Gastropod Mortality Plate. Scytalocrinus robustus, Histocrinus coreyi, Scytalocrinus decadactyl...

Description

Fossil Crinoid & Gastropod Mortality Plate
Scytalocrinus robustus, Histocrinus coreyi, Scytalocrinus decadactylus (x3), Onychocrinus ulrichi, Sarocrinus varsovensis, Platyceras equilateralis, Pachylocrinus aequalis (x3), Saccosomopsis insperatus, Barycrinus sp., Cyathocrinites iowensis, & Agariococ

This exceptional Fossil Crinoid plate originates from the Mississippian-aged Edwardsville Formation of Crawfordsville, Indiana, a locality renowned for some of the finest preserved echinoderms in the fossil record. Formed approximately 340 million years ago in a shallow inland sea, these deposits record episodes of sudden burial that produced remarkable mass mortality assemblages.

The slab preserves a dense concentration representing approximately 13 crinoid species, with calyces, stems, arms, and columnals interwoven across a classic gray Limestone matrix. A single inverted fossil gastropod shell adds ecological context and diversity to the composition. Expert preparation has revealed fine morphological detail while maintaining the integrity of the original fossil, resulting in a scientifically important and visually compelling example from one of North America's most storied Paleozoic localities.
Overall Measurements: 9.84 x 8.35 x 0.76 inches (25.00 x 21.20 x 1.93 cm)

Estimate: $1,500 - up.

*Heritage Auctions strives to provide as much information as possible but encourages in-person inspection by bidders. Statements regarding the condition of objects are only for general guidance and should not be relied upon as complete statements of fact, and do not constitute a representation, warranty or assumption of liability by Heritage. Some condition issues may not be noted in the condition report but are apparent in the provided photos which are considered part of the condition report. Please note that we do not de-frame lots estimated at $1,000 or less and may not be able to provide additional details for lots valued under $500. Heritage does not guarantee the condition of frames and shall not be liable for any damage/scratches to frames, glass/acrylic coverings, original boxes, display accessories, or art that has slipped in frames. All lots are sold "AS IS" under the Terms & Conditions of Auction.