Submitted on 2025-12-01 by James Musolf

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This is a great example of a rare Michigan trilobite!

Photo title: Michigan trilobite

Taxa present:

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Submitted on 2025-11-30 by James Musolf

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This is an extremely rare crinoid, This is one of if not the only one of this species ever found at this site.

Photo title: Crinoid crown

Taxa present: Devonochonetes fragilis, Decadocrinus hughwingi

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Submitted on 2025-11-30 by James Musolf

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: A great example of a rare Michigan trilobite Pseudodechnella witherspooni,

Photo title: Trilobite

Taxa present:

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Submitted on 2025-11-05 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: None

Photo title: Coral and Blastoids

Taxa present: Heliophyllum halli, Heteroschisma subtrunctatum

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: The crown of the crinoid is 5 cm tall.

Photo title: Crinoid and Trilobite

Taxa present: Eldredgeops milleri, Arthroacantha carpenteri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: The trilobite is 4.7 cm.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: The trilobites measure 1.8 cm each.

Photo title: Trilobites

Taxa present: Eldredgeops milleri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: The trilobite is 4.3 cm tall

Photo title: Trilobite with Brachiopod

Taxa present: Eldredgeops milleri, Strophodonta sp.

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This specimen is not as large as the previous but is still a very large specimen for this site. The trilobite measures 4.5 cm across the cephalon.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: Another large specimen. This one also measures 4.5 cm across the cephalon.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes:

Photo title:

Taxa present: Eldredgeops rana

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This trilobite is 7.7 cm which is considered quite large.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: Specimen is 6.5 cm top to bottom.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This specimen is 5.3 cm tall.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: And another large specimen. This specimen measures 4.7 cm across the cephalon.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This trilobite is 5.2 cm tall.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This trilobite is 5.7 cm across.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is 5 cm tall. This specimen is one of those rare inflated specimen that are occasionally found. It was also found sitting on a piece of marcasite surrounded by softer shale.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: These guys are each about a inch long.

Photo title: Pair of trilobites

Taxa present: Eldredgeops milleri

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Submitted on 2025-09-03 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: One of the largest trilobites found at this site. The trilobite measures 5.3 cm across the cephalon.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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