Submitted on 2014-04-27 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: Oddly, we missed posting an image of one of the loveliest brachiopods of the Middle Devonian Silica shale! This was brought to my attention by M. Palescuk while we were collecting at Milan, MI so I am taking this time to post one of the nice robust examples of this species that is characteristic of this site. This Brachiopod is 3.3 cm wide by 2.5 cm by 2. cm thick. A second photo follows with some more examples of this brachiopod.

Photo title: Schizophoria brachiopod

Taxa present: Schizophoria ferronensis

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Submitted on 2014-04-27 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This photo shows several other examples from the same site including the main example. the smallest here is 1 cm by .8cm. These brachiopods are so finely lined they rarely have epifauna other then Spiorbis on them.

Photo title: Several Schizophoria examples

Taxa present: Schizophoria ferronensis

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Submitted on 2014-05-12 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: These examples of this Cyrtina are from the old Martin-Marietta quarry of Silica shale spoil piles in Milan, Mi. This closed area has a large number of these particular Cyrtinas. These were just collected in 2014.

Photo title: Cyrtina umbonata alpenensis

Taxa present: Cyrtina umbonata alpenensis

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Submitted on 2014-08-06 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This colony measures 9 cm across the plate

Photo title: Bryozoa

Taxa present: Fenestrellina sp.

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Submitted on 2014-10-03 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This large Brachiopod is encrusted with Aulopora microbuccinata which has grown over the lip of the Brachiopod meaning it was probably dead. The brachiopod is 6.1 cm wide by 4.1 cm long and 4.4 cm deep. This is heavily piritized as are many of the Sylvania fossils.

Photo title: Coral on Brachiopod

Taxa present: Aulopora microbuccinata

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Submitted on 2014-10-02 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This is a side view of the previous Brachiopod.

Photo title: Another view

Taxa present: Paraspirifer bownockeri

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Submitted on 2014-10-02 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This is a different brachiopod from the same location also encrusted with Aulopora microbuccianata. It also show a small hole in the shell that looks like a snail boring. This Brachiopod is 7. cm wide, 4.6 cm long and 4.3 cm thick.

Photo title: Another Brachiopod with corals

Taxa present: Paraspirifer bownockeri

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Submitted on 2014-10-02 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Here is a large Bownockeri with a huge inarticulate Petrocrania hamiltonae attached. Inarticulates do not get much bigger then this. The Brachiopod is 5.6 cm wide, 4.2 cm long and 4.1 cm deep. The inarticulate is 2 cm around

Photo title: Large Brachiopod with Inarticulate.

Taxa present: Paraspirifer bownockeri

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Submitted on 2014-10-02 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This different view shows the inarticulate a bit better. see previous entry for sizes.

Photo title: Another view.

Taxa present: Paraspirifer bownockeri

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Submitted on 2014-10-02 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This small Brachiopod has two inarticulates. This is the ventral (bottom) side with the scar of a Petrocrania species showing.

Photo title: Strophodonta brachiopod with two inarticulates!

Taxa present: Strophodonta demissa

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Submitted on 2014-10-02 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This is the brachial (top) valve with an intact Petrocrania hamiltonae snugly in place. It is unusual to have inarticulates on both valves of a brachiopod.

Photo title: The other side of the previous brachiopod

Taxa present: Strophodonta demissa

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Submitted on 2014-10-02 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: A nice big articulate brachiopod that is 5.4 cm wide and 4.6 cm long. Just visible on the hinge line is an inarticulate brachiopod shown in the next picture.

Photo title: Large Brachiopod

Taxa present: Megastrophia concava

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Submitted on 2014-10-02 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: These inarticulates, the largest being Petrocrania hamiltonae, and 1.5 cm, are out of the way at the back of the big Megastrophia. The tiny ones are .76 mm and are in the Philhedra family but they may be stewerti or crenistriata sp., it is hard to tell.

Photo title: Multiple Inarticulates hiding out on the hinge line.

Taxa present: Megastrophia concavus

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This was collected and prepared by Dan Edmondson during the Summer of 2012. The specimen is 39 mm across the cephalon.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 102 mm from top of the arms to the bottom of the calyx. Collected and prepared by Patricia Rutkowski.

Photo title: Crinoid

Taxa present: Arthroacantha carpenteri

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 134 mm from bottom of the stem to the top of the arms. Collected by Pat Rutkowski. Picture 1 features the entire plate.

Photo title: Crinoid

Taxa present: Decadocrinus hughwingi

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Picture 2 featuring a close-up of the crown.

Photo title: Crinoid

Taxa present: Decadocrinus hughwingi

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 61 mm long. Collected by Mike Palescuk in 2013. Prepared by Dan Edmondson. Bottom right image is the unprepared part and counter-part. Negative on the bottom.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: I found these on April 14, 2012. They are both about 35 mm across the cephalon. The top picture is what they looked like fresh from the quarry. Below is after being prepared by David Clark.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 120 mm across

Photo title: Fish

Taxa present: Protitanichthys sp.

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