Submitted on 2008-02-18 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Crinoid is 3 cm tall.

Photo title: Crinoid crown

Taxa present: Decadocrinus multinodosus

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Submitted on 2015-11-07 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: Specimen is about 1 cm across.

Photo title: Coral

Taxa present: Pleurodictyum cornu

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Submitted on 2008-02-19 by Joseph Koniecki

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Specimen is about 4.5cm across.

Photo title: Trilobite

Taxa present: Basidechenella arkonensis

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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 2008-02-19 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: Brachiopod is about 3 cm long.

Photo title: Brachiopod

Taxa present: Cranaena romingeri

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This crinoid is perserved in the starburst position. The crinoid is 12 cm in diameter.

Photo title: Crinoid crown

Taxa present: Arthroacantha carpenteri

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Nice crinoid that is 10 cm from tip of arms to stem.

Photo title: Crinoid

Taxa present: Arthroacantha carpenteri

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Another nice crinoid specimen but this one shows a lot of cirri coming off the stem. The crinoid is 9 cm top to bottom.

Photo title: Crinoid

Taxa present: Arthroacantha carpenteri

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This plate has a partial crinoid crown with several gastropods lying around. The plate is 17 cm across.

Photo title: Crinoid with gastropods

Taxa present: Spiniplatyceras arkonense, Arthroacantha carpenteri

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This is a very nice crinoid crown that also has a brittle star lying on the arms. The crinoid is about 5 cm across the arms.

Photo title: Crinoid with starfish

Taxa present: Arthroacantha carpenteri, Eugasterella thorni

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Thedford, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This specimen is from the Arkona Fm. and is not pyritized. This specimen is 2.5 cm across.

Photo title: Ammonite

Taxa present: Tornoceras mesopleuron

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: An example of the more typical preservation of ammonites in the Widder formation. The ammonite is 2.2 cm across.

Photo title: Ammonite

Taxa present: Tornoceras uniangulare widderi

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 1.6 cm across.

Photo title: Gastropod

Taxa present: Naticonema lineata

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This specimen is 5 cm across.

Photo title: Bryozoan

Taxa present: Leptotrypella quadrangularis

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A syperb specimen that is 5 cm tall.

Photo title: Gastropod

Taxa present: Platyceras conicum

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Two specimens of the same species with one perserved in the normal position and one in the starburst position. The slab is 18 cm tall.

Photo title: Crinoids

Taxa present: Decorocrinus arkonensis

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: A beautiful colony that is 12 cm across. Photos do not do this grouping justice.

Photo title: Coral colony

Taxa present: Cylindrophyllum sp.

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Submitted on 2008-03-22 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This blastoid is 3.5 cm tall.

Photo title: Blastoid

Taxa present: Placoblastus obovatus

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Submitted on 2008-03-23 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This crinoid is 10 cm including the stem.

Photo title: Crinoid

Taxa present: Dolatocrinus sp.

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Submitted on 2008-03-23 by Joseph Koniecki

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This crinoid is 3.5 cm across.

Photo title: Crinoid calyx

Taxa present: Megistocrinus rugosus

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