Submitted on 2011-06-09 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: An additional view showing snail attachment to tegmen of crinoid

Photo title: Snail on crinoid

Taxa present: Dolatocrinus barrisi, Platyceras conicum

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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 the last view showing the attachment of the Platyceras to the crinoid. This is quite a small specimen and difficult to show all the details

Photo title: Third view of snail/Crinoid

Taxa present: Dolatocrinus barrisi, Platyceras conicum

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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 asterias complete crinoid with full crown, feeding arms and stem, both disarticulated and complete of about 5' or 12.5 cm in length. The entire plate is 12.5' or 18 cm tall by 5' or 12.5 cm wide. the caylx itself is only .5' or 1.5 cm wide and the crown is a total of 4.5 cm tall.

Photo title: Complete small Crinoid on plate.

Taxa present: Dolatocrinus asterias

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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 close up view of the small crinoid previously. The species of Dolatocrinus asterias is quite variable in the plate structure of the calyx and this is a young example so the plates may not be typical.

Photo title: Detail of crinoid crown with feeding arms

Taxa present: Dolatocrinus asterias

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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: 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 2011-06-01 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 12.5 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 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 2011-05-04 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 2011-05-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Closer view of crinoid.

Photo title: Another view of large crinoid from Thunder Bay Limestone

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: 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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