Submitted on 2009-01-04 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: Cup view of the same specimen.

Photo title: Coral - View #2

Taxa present: Heliophyllum halli potterense

UMMP specimen number: holotype 44540

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Submitted on 2009-01-07 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This specimen is a paratype. It is 7 cm across.

Photo title: Coral

Taxa present: Cylindrophyllum grabaui

UMMP specimen number: paratype 25678

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Submitted on 2009-01-07 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: This specimen is a hypotype. It is 10 cm across.

Photo title: Coral

Taxa present: Cylindrophyllum hindshawi

UMMP specimen number: hypotype 25626

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Submitted on 2009-01-07 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

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

Photo title: Coral

Taxa present: Cylindrophyllum panicum

UMMP specimen number: hypotype 14338

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Submitted on 2009-01-07 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This specimen is 8 cm tall.

Photo title: Coral

Taxa present: Bethanyphyllum sp.

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Submitted on 2009-01-07 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Cup view of the same specimen.

Photo title: Coral

Taxa present: Bethanyphyllum sp.

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Submitted on 2009-02-05 by John Topor

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: One of four different genera that are found in this formation. This is a large specimen for the species. It measures 25.6mm high x 15mm at the widest point.

Photo title: Blastoid

Taxa present: Hyperoblastus bassleri

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Submitted on 2009-02-15 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: These four specimen only represent several hundred of these brachiopods that are cataloged under this UMMP number in the collection. The largest of the 4 specimens shown here is 2.8 cm across.

Photo title: Brachiopods

Taxa present: Strophodonta crassa

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Submitted on 2009-04-12 by Joseph Kchodl

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: Two typical specimens of the branching coral. The larger specimen measures 38.5mm high and 15.2mm at the widest branch. The smaller measures 17.4mm tall and 14.7mm at the widest.

Photo title: Coral

Taxa present: Trachypora alternans

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Submitted on 2009-04-12 by Joseph Kchodl

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: Two nice specimens of a common braciopod in this formation. These specimens are approximately 10mm wide.

Photo title: Brachiopods

Taxa present: Cyrtina alpenensis

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Submitted on 2009-04-12 by Joseph Kchodl

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: Pedicle view of a fine specimen measuring 52.4mm long and 15.0mm wide.

Photo title: Brachiopod

Taxa present: Mucrospirifer latus

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Submitted on 2009-04-12 by Joseph Kchodl

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: Brachial view of a fine specimen measuring 52.4mm long and 15.0mm wide.

Photo title: Brachiopod

Taxa present: Mucrospirifer latus

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Submitted on 2009-04-12 by Joseph Kchodl

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: Several specimens of a common fossil in this formation.

Photo title: Tentaculites

Taxa present: Tentaculites sp.

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Submitted on 2009-04-12 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: A 9mm high specimen.

Photo title: Blastoid

Taxa present: Heteroschisma alatum

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Small crinoid calyx from the Thunder bay limestone at Partridge Point in Alpena The Caylx is about 3/4' or 20 mm in diameter and about 9/16' or 15mm high. This shows the ornamented base and stem attachment

Photo title: Dolatocrinus triangulatus

Taxa present: Dolatocrinus triangulatus

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Side view showing part of arm attachments

Photo title: Dolatocrinus triangulatus

Taxa present: Dolatocrinus triangulatus

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This shows the crinoid calyx on a dark background to emphasize detail.

Photo title: Dolatocrinus triangulatus

Taxa present: Dolatocrinus triangulatus

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Showing tegman.

Photo title: Dolatocrinus triangulatus

Taxa present: Dolatocrinus triangulatus

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This tabulate coral attaches around the stem of crinoids which is believed to keep them off the substrate. These are delicate corals and there are fronds of Bryozoan in the coralite cups but are NOT part of the Antholites. This is from the same Thunder Bay Limestone locality for the Dolatocrinus just shown and collected the same day. This does look a bit like a Mayan god of rain!

Photo title: Antholites alpenensis

Taxa present: Antholites alpenensis

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Another view of the reverse side of coral just shown. Again this is with a dark background to highlight detail of the coral. A bit of the crinoid stem is visible at the top of the image

Photo title: Antholites alpenensis

Taxa present: Antholites alpenensis

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