Submitted on 2012-07-07 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Antrim formation

Submitter notes: The larger specimen is 1 cm.

Photo title: Inarticulate Brachiopods

Taxa present: Lingula sp.

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Submitted on 2012-07-07 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Antrim formation

Submitter notes: The larger specimen is 0.9 cm.

Photo title: Inarticulate Brachiopods

Taxa present: Lingula sp.

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Submitted on 2012-07-07 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Antrim formation

Submitter notes: This specimen is 0.8 cm.

Photo title: Inarticulate Brachiopods

Taxa present: Lingula sp.

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Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Ohio formation

Submitter notes: Dundee Limestone, Sylvania, Ohio (Devonian) - 40 mm. Rostroconchs are an extinct class of molluscs.

Photo title:

Taxa present: Hippocardia cunea

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Submitted on 2015-12-20 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Antrim formation

Submitter notes: 10 mm long

Photo title:

Taxa present: Lingula sp.

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Submitted on 2024-02-11 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Paxton formation

Submitter notes: Dunkleosteus sp., Antrim Shale, Traverse Group, Paxton Quarry, Alpena, Michigan (Devonian) - 326 mm long (over a foot!) This is a section of the left, lower inferognathal element (part of the lower jaw). Collected and prepared by Patricia Rutkowski. She recovered part of it in 1994 and another part in 1998.

Photo title:

Taxa present: Dunkleosteus sp.

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