Submitted on 2008-03-23 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This a very nice specimen showing a crinoid crown with two gastropods attached. The spines on the crinoid calyx are still attached. The very long spines of the gastropods are still in place. In addition, there is bryozoan in place on the gastropod (photo is in next datapoint entry). This specimen is 14 cm across from arm tip to arm tip.

Photo title: Crinoid with gastropods

Taxa present: Platyceras arkonense, Arthroacantha carpenteri, Sulcoretepora sp.

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Submitted on 2008-03-23 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This is view two of the previous entry. This photo shows the bryozoan which was growning on the gastropod that was living on the crinoid. The bryozoan is only 1 cm tall. See previous entry for view of crinoid with gastropods.

Photo title: Bryozoan on gastropod on crinoid

Taxa present: Spiniplatyceras arkonense, Sulcoretepora sp., Arthroacantha carpenteri

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): , Presque Isle, MI

Strat unit: Genshaw formation

Submitter notes: These specimens are hypotypes. The larger specimen is 2.5 cm.

Photo title: Brachiopods

Taxa present: Athyris fultonensis

UMMP specimen number: hypotype 37409

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: These specimens are hypotypes. The large specimen is 1.5 cm.

Photo title: Brachiopods

Taxa present: Athyris vittata

UMMP specimen number: hypotype 61199

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a hypotype and is 5 cm across the photo.

Photo title: Bryozoan

Taxa present: Helopora inexpectata

UMMP specimen number: hypotype 61318

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This piece has two different bryozoans. The Intrapora is the flat specimen and the Hernodia is on top of it and looks much like an Auloporid coral. The specimen is 4 cm across the photo. The specimen is a hypotype.

Photo title: Bryozoans

Taxa present: Intrapora irregularis, Hernodia humifusa

UMMP specimen number: hypotype 61143

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a hypotype. It is 3 cm across the facing side of the brachiopod.

Photo title: Bryozoan

Taxa present: Hederella filiformis, Paraspirifer bownockeri

UMMP specimen number: hypotype 61399

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 8 cm across. It is a hypotype.

Photo title: Coral

Taxa present: Heliophyllum tenuiseptatum

UMMP specimen number: hypotype 8567

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This beautiful specimen is very large, being about 30 cm in length. It is a paratype.

Photo title: Coral

Taxa present: Cystiphylloides americanum elongatum

UMMP specimen number: paratype 35282

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Traverse formation

Submitter notes: This specimen is 12 cm across.

Photo title: Coral

Taxa present: Favosites alpenensis hamiltonensis

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This specimen is 7.5 cm across. It is a paratype.

Photo title: Coral

Taxa present: Emmonsia alpenensis

UMMP specimen number: paratype 37954

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Ann Arbor, Washtenaw, MI

Strat unit: Detroit River formation

Submitter notes: This specimen is 13 cm across.

Photo title: Coral

Taxa present: Favosites canadensis

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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): 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 2008-03-22 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): 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: 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: This specimen is 1.6 cm across.

Photo title: Gastropod

Taxa present: Naticonema lineata

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