Submitted on 2012-07-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This nice complete crinoid calyx in matrix shows tegmen ornamentation as well as arm attachments for this Pithocrinus cooperi. The crinoid is 1.37 inches,(3.12 cm) high by 1.38 inches,(3.5 cm) wide. The matrix is 2.71 inches, (6.8 cm) wide by 3.2 inches, (8.1 cm) long

Photo title: Complete crinoid calyx

Taxa present: Pithocrinus cooperi

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Submitted on 2012-07-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This is the opposite side of the previous crinoid. The same dimensions apply.

Photo title: Reverse side

Taxa present: Pithocrinus cooperi

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Submitted on 2012-07-03 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This specimen is 12 cm tall.

Photo title: Bryozoan

Taxa present: Fistulipora sp.

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Submitted on 2012-06-17 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This is a very rare crinoid from the Thunder Bay formation. It measures 3 cm tall.

Photo title: Crinoid crown

Taxa present: Cunctocrinus sp.

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Submitted on 2012-05-02 by David Clark

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Very tiny blue fish tooth is about 1 mm long

Photo title: Unidentified Devonian fish tooth

Taxa present: Unknown

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Submitted on 2012-05-02 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: A snail found in a unique position on a crinoid. Most gastropods attach to the calyx, not the stem.

Photo title: Platyceras conicum gastropod on a crinoid stem

Taxa present: Platyceras conicum

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Submitted on 2012-03-14 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 13.5 cm across.

Photo title: Coral

Taxa present: Platyaxum frondosum

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Submitted on 2012-03-13 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This specimen is 5 cm across.

Photo title: Crinoid crown

Taxa present: Pithocrinus cooperi

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Submitted on 2012-03-13 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This specimen is 3 cm tall.

Photo title: Crinoid

Taxa present: Euryocrinus barrisi

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Submitted on 2012-03-13 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This specimen is 2.5 cm tall.

Photo title: Crinoid

Taxa present: Euryocrinus barrisi

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Submitted on 2012-03-13 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This specimen is 2.5 cm tall.

Photo title: Crinoid

Taxa present: Euryocrinus barrisi

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Submitted on 2012-03-13 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This specimen is 6 cm tall.

Photo title: Crinoid crown

Taxa present: Pithocrinus cooperi

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Submitted on 2012-03-12 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This calyx is 2.8 cm across.

Photo title: Crinoid calyx

Taxa present: Dolatocrinus romingeri

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Submitted on 2012-02-23 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This crown is 6 cm tall.

Photo title: Crinoid crown

Taxa present: Pithocrinus cooperi

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Submitted on 2012-02-23 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This specimen is 4.3 cm tall.

Photo title: Crinoid crown

Taxa present: Pithocrinus cooperi

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Submitted on 2012-01-22 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This specimen measures 1.5 cm in diameter. The photo shows both sides of the same specimen.

Photo title: Coral

Taxa present: Pleurodictyum plana

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Submitted on 2012-01-22 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: The coral measures 5 cm in diameter.

Photo title: Coral

Taxa present: Heterophrentis simplex

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Submitted on 2012-01-21 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This photo shows the pedicle and brachial valve of the same specimen. The specimen measures 6.5 cm across.

Photo title: Brachiopod

Taxa present: Megastrophia concava

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Submitted on 2012-01-12 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Multiple views of the same specimen. The brachiopod is 6.4 cm across.

Photo title: Brachiopod

Taxa present: Mediospirifer audaculus

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Submitted on 2012-01-11 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: The specimen is 3 cm across.

Photo title: Crinoid calyx

Taxa present: Dolatocrinus barrisi

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