Submitted on 2009-11-19 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A very small coral colony measuring 9mm X 4mm.

Photo title: COLONY CORAL

Taxa present: Favosites sp.

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Submitted on 2009-11-19 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A vnunderside view of the very small coral colony measuring 9mm X 4mm.

Photo title: COLONY CORAL

Taxa present: Favosites sp.

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Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: A rare crinoid measuring 10mm long.

Photo title: CRINOID STEM AND PARTIAL CALYX

Taxa present: Melocrinites sp.

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Submitted on 2009-11-19 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Surface collected in the Hungry Hollow mb. This crushed specimen may have an unusual 4th row of spines on the calyx. It mesures 15mm wide.

Photo title: CRINOID CALYX

Taxa present: Gilbertsocrinus spinigerus

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Submitted on 2009-11-19 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: A common pyritized ammonite from the Arkona Formation. It measures 7.5mm in diameter.

Photo title: Ammonite

Taxa present: Tornoceras (T.) arkonensis

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Submitted on 2011-12-27 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Trilobite cluster as found unprepared

Photo title: Trilobite cluster as found

Taxa present: Basidechenella arkonensis, Eldredgeops

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Submitted on 2011-12-27 by David Clark

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 2 mm crinoid calyx, possibly Arthroacantha carpenteri. Photo via SEM

Photo title: Juvenile crinoid calyx

Taxa present: Arthroacantha carpenteri

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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 2012-05-02 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 2014-05-16 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: A very rare crinoid found on the flank beds of a bioherm by Travis Vivian.

Photo title: Vasocrinus calyx

Taxa present: Vasocrinus

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Submitted on 2014-05-16 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Partridge Point formation

Submitter notes: A small calyx with interesting ornimentation from Partridge Point

Photo title: Botryocrinus thomasi calyx

Taxa present: Botryocrinus thomasi

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Submitted on 2014-10-11 by David Clark

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A beautiful crinoid prepared with the spines free standing.

Photo title: Devonian crinoid

Taxa present: Gilbertsocrinus ohioensis

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Submitted on 2014-10-11 by David Clark

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Crinoid showing regeneration of damaged arms.

Photo title: Devonian crinoid

Taxa present: Arthroacantha carpenteri

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Submitted on 2019-10-23 by David Clark

Location (approximate): Grand Ledge, Eaton, MI

Strat unit: Grand River formation

Submitter notes: Pennsylvanian aged fern fronds from central Michigan

Photo title: Fern fronds

Taxa present: Neuropteris sp.

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