How old are Greenops trilobite fossils?

Greenops fossils come from Devonian-age marine rocks, making them roughly 400 to 370 million years old. They are most commonly found in the Middle Devonian formations of eastern North America.

Where are Greenops trilobites found?

Greenops specimens are best known from Devonian rocks in New York State, particularly the Hamilton Group, and from related formations in Ontario, Canada. The famous trilobite beds at sites like Penn Dixie and Deep Springs Road produce fine Greenops material.

What does a Greenops trilobite look like?

Greenops has a wide, segmented exoskeleton with prominent eyes and spiny margins extending from the thorax and pygidium (tail shield). The spiny ornamentation is one of its most distinctive features.

Is Greenops related to Phacops or Eldredgeops?

Yes—Greenops is a phacopid trilobite, in the same family group as Phacops and the recently separated genus Eldredgeops (now applied to many specimens long called 'Phacops rana'). All share schizochroal compound eyes and enrolled-body preservation.

How does Greenops compare to competitors?

Lunoo provides objective, AI-powered comparisons. Use the comparison tool to see Greenops side-by-side with any alternative.

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Greenops

7.82

Good

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description Greenops Overview

Greenops is a genus of phacopid trilobites known from Devonian marine rocks in North America. Fossils assigned to the genus have a segmented exoskeleton, prominent eyes, and spines extending from parts of the thorax and pygidium, while articulated specimens can preserve the enrolled defensive posture used by many trilobites. Greenops is especially familiar from fossil-bearing formations in New York and is studied by collectors and paleontologists examining Devonian marine ecosystems.

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How good is Greenops?

Greenops scores 7.82/10 (Good) on Lunoo, making it a well-rated option in the Trilobite category. Recognized North American Devonian spiny trilobite with good preservation and collector reputation; not quite an iconic global classic.

What are the best alternatives to Greenops?

See our alternatives page for Greenops for a ranked list with scores. Top alternatives include: Phacops rana, Crotalocephalus, Huntonia.

How does Greenops compare to Phacops rana?

See our detailed comparison of Greenops vs Phacops rana with scores, features, and an AI-powered verdict.

Is Greenops worth it in 2026?

With a score of 7.82/10, Greenops is a solid option in Trilobite. See all Trilobite ranked.

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