Submitted on 2008-02-25 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Traverse formation

Submitter notes: In the Genshaw formation there is a noted section containing these small inflated Athyris brachiopods along with small Atrypa species. There are thousands of these small brachiopods all of the same size and few showing any predatory borings or damage. Due to hydrocarbons in some nearby layers and the presence of water, they are a distinct and clear blue. Once dry, they are a flat gray. These were collected and are being kept in water to preserve the color which shows a bit in these photos.

Photo title: blue Athyris brachiopods from the 'blue beds'

Taxa present: Athyris lens

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Submitted on 2008-02-25 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Traverse formation

Submitter notes: Another view of these small brachiopods. Where these are found they are all about the same size but in a deep layer. Considering the numbers found at exposed sites,there must be millions of these brachiopods in the formation. It is staggering to wonder what was going on at this time whereby so many brachiopods of almost one size (and age?) lived and died preserved this way. These are things I wonder about and make collecting so fascinating.

Photo title: blue Athyris brachiopods from the 'blue beds'

Taxa present: Athyris lens

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is the holotype for the species and is 21 cm across.

Photo title: Coral

Taxa present: Trachypora silicensis

UMMP specimen number: holotype 53063

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Rockport, Alpena, MI

Strat unit: Ferron Point formation

Submitter notes: This specimen is a paratype and is 7 cm top to bottom.

Photo title: Coral

Taxa present: Favosites alpenensis peninsulae, Hexagonaria sp.

UMMP specimen number: paratype 21566

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This speciemn is a hypotype and is 1 cm across.

Photo title: Inarticulate Brachiopod

Taxa present: Orbuculoidea doria

UMMP specimen number: hypotype 57151

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This specimen is the holotype for the species. It is 3 cm across

Photo title: Trilobite

Taxa present: Basidechenella witherspooni

UMMP specimen number: holotype 56620

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is the holotype for the species. It is 2.5 cm across.

Photo title: Trilobite

Taxa present: Basidechenella lucasensis

UMMP specimen number: holotype 49757

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This specimen is a hypotype and is 17 cm across.

Photo title: Trilobite

Taxa present: Dipleura dekayi

UMMP specimen number: hypotype 54161

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Specimen is 5 cm across both sets of teeth.

Photo title: Phyllocarid Teeth

Taxa present: Dithyrocaris neptuni

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a paratype and is 5.5 cm across.

Photo title: Phyllocarid Teeth

Taxa present: Herbertocaria wideneri

UMMP specimen number: paratype 57462

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a hypotype. The carapace is 9 cm across and the set of teeth is 1 cm.

Photo title: Phyllocarid Teeth and carapace

Taxa present: Rhinocaris ehlersi

UMMP specimen number: hypotype 57370

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This specimen is a hypotype and is 7 cm including the stem.

Photo title: Crinoid

Taxa present: Synbathocrinus michiganensis

UMMP specimen number: hypotype 57632

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a paratype and is 10 cm tall.

Photo title: Crinoid

Taxa present: Proctothylacocrinus longus

UMMP specimen number: paratype 27695

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This specimen is the holotype for the species. It is 12 cm tall.

Photo title: Crinoid

Taxa present: Proctothylacocrinus berryorum

UMMP specimen number: holotype 58656

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a paratype and is 3 cm tall.

Photo title: Crinoid

Taxa present: Eutaxocrinus wideneri

UMMP specimen number: paratype 57901

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a hypotype and is 2.5 cm across

Photo title: Crinoid

Taxa present: Euryocrinus laddii

UMMP specimen number: hypotype 61311

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Submitted on 2008-03-01 by ummp invertebrate paleontology

Location (approximate): Charlevoix, Charlevoix, MI

Strat unit: Traverse formation

Submitter notes: This specimen is a paratype and is 2.7 cm top-bottom.

Photo title:

Taxa present: Aviculopecten sp.

UMMP specimen number: paratype 20318

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Submitted on 2008-03-02 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A rare gastropod from the Encrinal Limestone (hardground) section of the Hungry Hollow member of the Widder Formation. The larger specimen measures 26mm in diameter and the smaller 21mm.

Photo title: GASTROPOD

Taxa present: Turbonopsis shumardi

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Submitted on 2008-03-02 by John Topor

Location (approximate): Thedford, Lambton, ON

Strat unit: Widder formation

Submitter notes: An uncommon snail from the upper Widder Formation. The diameter of the snail is 25mm. The brachiopod Stropheodonta demissa is 27mm wide. The slab is 75mm X 50mm.

Photo title: GASTROPOD

Taxa present: Euomphalus laxus, Stropheodonta demissa

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Submitted on 2008-03-02 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A very unusual small snail from the Hungry Hollow member. They are uncommon but not rare. At one time it’s placement was in the phylum Annelida. The specimens range from 6-7mm in diameter and 3-5mm in height.

Photo title: GASTROPODS

Taxa present: Autodetus lindstroemi

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