Submitted on 2011-05-04 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This brachiopod is 3.65 cm long by 2.9 cm wide

Photo title: Another view of old brachiopod

Taxa present: Pseudoatrypa devoniana, Aulopora microbuccinata

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Submitted on 2011-05-04 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This large Brachiopod is almost covered on top by an encrusting bryozoan. The Bryozoan has a very typical pattern of small raised monticules that identify it.

Photo title: Silica Brachiopod with epifauna

Taxa present: Paraspirifer bownockeri, Atactotoechus typicus

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Submitted on 2011-05-04 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This view shows the edge of the encrusting bryozoan on the top of the Brachiopod. The Brachiopod is 4.4 cm long by 5.8 cm wide.

Photo title: Second view of Brachiopod with Bryozoan

Taxa present: Paraspirifer bownockeri, Atactotoechus typicus

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Submitted on 2011-05-04 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This large brachiopod was infested by the worm, Cornulites, at an early stage. It also shows the tiny holes of the boring sponge, Clionoides, along what was once the lip of the Brachiopod. What is unusual here is that the worm died before the Brachiopod as the tube is truncated and the brachiopod continues to grow with a healing scar. The Brachiopod is 4.1 cm high by 5.9 cm wide.

Photo title: Brachiopod with healing worm scars

Taxa present: Paraspirifer bownockeri, Cornulites

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Submitted on 2011-05-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This is a large and pretty complete crown with stem in matrix. The stem is 2 3/4 inches long (7.5 cm). The whole piece is 8 1/2 inches long (21.5 cm), by 5 inches high (12.5 cm). The calyx is 4.1 cm wide and the longest arm is 3.4 cm long.

Photo title: Crown and stem of large Crinoid

Taxa present: Dolatocrinus stellifer

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Submitted on 2011-05-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This view shows the arms and calyx of this rather rare crinoid. There is a frond of Bryozoan draped over some of the arms which show the flattened tips of the arms

Photo title: Complete crown of unusual crinoid

Taxa present: Aorocrinus cassedayi

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Submitted on 2011-05-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Traverse formation

Submitter notes: Rare crinoid with gastropod attached. Complete calyx with crushed but clear gastropod and the base of several arms. The edge of the gastropod has attached around the small bumps on the crinoid tegmen

Photo title: Pithocrinus cooperi with Platyceras rarispinium

Taxa present: Platyceras rarispinium, Pithocrinus cooperi

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Submitted on 2011-05-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This view is directly onto the tegmen showing the position of the gastropod and remaining arm bases.

Photo title: Pithocrinus cooperi & gastropod

Taxa present: Pithocrinus cooperi, Platyceras rarispinium

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Submitted on 2011-05-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This third view shows the unusual plate structure of this crinoid calyx with the gastropod visible on top.

Photo title: Third view of unusual crinoid & gastropod

Taxa present: Pithocrinus cooperi, Platyceras rarispinum

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Submitted on 2011-05-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This view shows the stem attachment and detail of the calyx ornamentation. The crinoid crown is 2.6 cm high by 2.9 cm at the widest point. The calyx is 1.2 cm thick in this view

Photo title: Third view of crinoid crown

Taxa present: Aorocrinus cassedayi

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Submitted on 2011-05-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This view shows the 3-D effect of the multiple arms folding over the top of the crown.

Photo title: View of arms folded over tegmen

Taxa present: Aorocrinus cassedayi

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Submitted on 2011-04-24 by Shanan Peters

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen was collected by Ken Karns, back in the hey-day of Sylvania.

Photo title: Eldredgeops milleri double

Taxa present: Eldredgeops milleri

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Submitted on 2011-04-18 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This specimen is 8 cm across.

Photo title: Bryozoan Colony

Taxa present: Sulcoretepora sp.

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Submitted on 2011-02-09 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is 4 cm across.

Photo title: Gastropod

Taxa present: Platyceras bucculentum

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Submitted on 2011-02-09 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: The inarticulate brachiopod lies on the articulate brachiopod. This specimen is 5.5 cm across.

Photo title: Articulate and Inarticulate Brachiopods

Taxa present: Petrocrania hamiltoniae, Paraspirifer bownockeri

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Submitted on 2011-02-09 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is 4 cm across.

Photo title: Articulate and Inarticulate Brachiopods

Taxa present: Petrocrania hamiltoniae, Strophodonta sp.

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Submitted on 2011-02-09 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: The worm tube is 0.9 cm.

Photo title: Worm tube on Brachiopod

Taxa present: Cornulites sp., Paraspirifer bownockeri

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Submitted on 2011-02-09 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is 7 cm across the entire piece.

Photo title: Brachiopods

Taxa present: Devonochonetes fragilis

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Submitted on 2011-02-09 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: Continued from View #1. On this side we have the inarticulate brachiopod Philhedra sitting on the piece of Strophodonta. In addition, on this side we have the bryozoan Hederella. Quite the variety of life on a specimen that is only 4 cm across.

Photo title: Inarticulate Brachiopod on an Articulate Brachiopod - View #2

Taxa present: Hederella sp., Philhedra crenistriata, Strophodonta sp.

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Submitted on 2011-02-09 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: The largest brachiopod is 2.5 cm across.

Photo title: Brachiopods

Taxa present: Devonochonetes sp.

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