Trilobite in sediment
This is a specimen of the classic New York, Silurian-aged trilobite, Dalmanites limulurus. It was collected from the famous Caleb's Quarry near Middleport, New York.
Dalmanites is a very visually striking trilobite is one of the classic North American fossils. The distinctive compound eye, believed to be a stereoscopic motion detector, had lenses made of rigid crystal. Its armor, spikes, and visual acuity imply that Dalmanites was trying to keep itself off the menu.
Trilobites were a very diverse group of extinct marine arthropods.
They first appeared in the fossil record in the Early Cambrian (521 million years ago) and went extinct during the Permian mass extinction (250 million years ago).
They were one of the most successful early animals on our planet: over 25,000 species have been described, filling nearly every evolutionary niche.
Due in large part to their hard exoskeletons (shells), they left an excellent fossil record.
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6,5 × 3,4 cm (FossiL)
Paleozoic, Silurian
c. 443 - 419 million years
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Dos & Bertie Winkel collection
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Rochester Shale Orleans co, New York
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€ 200,—