Submitted on 2011-05-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This is a closer view of the Calyx of the previous Crinoid. As stated it is about 4.1 cm wide.

Photo title: Detail of Calyx

Taxa present: Dolatocrinus stellifer

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Submitted on 2011-05-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Close up view of arms and pinnules of Dolatocrinus in previous views. The longest of these is 3.4 cm long.

Photo title: Last view of arms and pinnules of crinoid.

Taxa present: Dolatocrinus stellifer

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Submitted on 2011-05-04 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: The Pseudoatrypa does not attract much epifauna but this one has the coral Aulopora microbuccinata spreading across it

Photo title: An old Brachiopod with epifauna

Taxa present: Pseudoatrypa devoniana, Aulopora microbuccinata

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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 2011-06-01 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 6 cm across.

Photo title: Coral

Taxa present: Heterophrentis simplex

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This specimen is 11 cm across.

Photo title: Bryozoan Colony

Taxa present: Leptotrypella quadrangularis

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This specimen is 3 cm tall.

Photo title: Clam

Taxa present: Leiopteria ausablensis

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 19 cm across.

Photo title: Coral Colony

Taxa present: Platyaxum frondosum

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 6.5 cm tall.

Photo title: Coral Colony

Taxa present: Eridophyllum subcaespitosum

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 7.5 cm tall.

Photo title: Coral Colony

Taxa present: Platyaxum frondosum

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 12.5 cm across.

Photo title: Coral Colony

Taxa present: Platyaxum frondosum

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Submitted on 2012-03-14 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 13.5 cm across.

Photo title: Coral

Taxa present: Platyaxum frondosum

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Close up view of one of the previously submitted specimens of Platyaxum.

Photo title: Coral Colony

Taxa present: Platyaxum frondosum

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This specimen is 1.5 cm in diameter. The bryozoan sits on the coral Platyaxum.

Photo title: Bryozoan Colony

Taxa present: Platyaxum frondosum, Botryllopora socialis

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Submitted on 2011-06-01 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This is the first and only reported occurance of the genera from the Arkona locality. The specimen was ID'ed by Dr. Fred Hotchkiss. The specimen is 2.7 cm in diameter. The missing plates of the star are on the negative which was collected and stored.

Photo title: Brittle Star

Taxa present: Loriolaster n. sp.

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Submitted on 2011-06-09 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: Here are two examples of Atactotoechus typicus Bryozoan on a horn coral and on the Brachiopod, Megastrophia. The small raised regular monticules are visible on these examples. The Horn Coral is from the Silica formation in Paulding, Ohio and the Megastrophia is from the Silica of Milan, Michigan.

Photo title: Encrusting Bryozoan on varied taxon

Taxa present: Atactotoechus typicus, Heliophyllum halli, Megastrophia concava

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Submitted on 2011-06-09 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This is a Dolatocrinus barrisi with a Platyceras conicum attached to the tegmen. As J. Koniecki pointed out earlier in this listing, the Platyceras conicum is not listed in the species of the Alpena area but it is clear the the platyceras fauna was similiar to other areas of the Michigan Basin and this is another example. The crown and Platyceras are 1.54' or 3.9 cm tall and 1.24' or 3.3 cm wide. there are two additional views.

Photo title: Unusual Snail attached to Crinoid caylx

Taxa present: Dolatocrinus barrisi, Platyceras conicum

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