Submitted on 2008-11-23 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes:

Photo title: Side view of crinoid/snail with worm tubes

Taxa present: Platyceras bucculentum, Cornulites , Gilbertsocrinus ohioensis

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Submitted on 2009-05-05 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: This large Platyceras has one of it\\\'s spines still attached. The \\\'snail\\\' itself is 1 & 3/4\\\'(4.5 cm) high by 1 & 1/2\\\'(3.8 cm) wide at the base. The spine is 3/4\\\' (2.0 cm) long. This from the Alpena Limestone and another I have on this site is from Hungry Hollow in Canada.

Photo title: Platyceras rarispinum

Taxa present: Platyceras rarispinum

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Submitted on 2009-05-05 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: A different view of the Platyceras showing the tightly coiled conch and the expansion of the shell. The Spine is in the background

Photo title: Platyceras rarispinum

Taxa present: Platyceras rarispinum

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Submitted on 2009-05-18 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A large encrusting Bryozoan colony showing the individual bryozoa and the spaced bumps over the colony. A USA 25 cent piece is for scale. The whole colony is 3' (7.5 cm) by 2.5' (6.5 cm) by 2' (5 cm). There has been some question as to this being a sponge.

Photo title: Fistuliporoid sp.

Taxa present: Fistulipora

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Submitted on 2009-05-18 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: Bottom view showing concentric layers of Bryozoa building the colony

Photo title: Fistuliporoid sp.

Taxa present: Fistulipora

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Small crinoid calyx from the Thunder bay limestone at Partridge Point in Alpena The Caylx is about 3/4' or 20 mm in diameter and about 9/16' or 15mm high. This shows the ornamented base and stem attachment

Photo title: Dolatocrinus triangulatus

Taxa present: Dolatocrinus triangulatus

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Side view showing part of arm attachments

Photo title: Dolatocrinus triangulatus

Taxa present: Dolatocrinus triangulatus

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This shows the crinoid calyx on a dark background to emphasize detail.

Photo title: Dolatocrinus triangulatus

Taxa present: Dolatocrinus triangulatus

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Showing tegman.

Photo title: Dolatocrinus triangulatus

Taxa present: Dolatocrinus triangulatus

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This tabulate coral attaches around the stem of crinoids which is believed to keep them off the substrate. These are delicate corals and there are fronds of Bryozoan in the coralite cups but are NOT part of the Antholites. This is from the same Thunder Bay Limestone locality for the Dolatocrinus just shown and collected the same day. This does look a bit like a Mayan god of rain!

Photo title: Antholites alpenensis

Taxa present: Antholites alpenensis

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Another view of the reverse side of coral just shown. Again this is with a dark background to highlight detail of the coral. A bit of the crinoid stem is visible at the top of the image

Photo title: Antholites alpenensis

Taxa present: Antholites alpenensis

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Submitted on 2009-06-03 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This view shows the crinoid stem and the thickness of the corals which are comparatively thin. The coral is 3/4' or 20 mm by 3/4' or 20 mm by 1/4' or 7 mm thick. I am sure many of my friends in FUMMP have better examples of this unusual coral they could show.

Photo title: Antholites alpenensis

Taxa present: Antholites alpenensis

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Submitted on 2009-06-03 by David Thompson

Location (approximate): , Presque Isle, MI

Strat unit: Bell formation

Submitter notes: Small complete crinoid Calyx from the Bell Shale at Rockport Quarry. The ornamented calyx is 3/4' or 20 mm by 3/4' or 20 mm but is a bit flattened.

Photo title: Gennaeocrinus variabilis

Taxa present: Gennaeocrinus variabilis

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Submitted on 2009-06-03 by David Thompson

Location (approximate): , Presque Isle, MI

Strat unit: Bell formation

Submitter notes: The base of the Gennaeocrinus showing the stem attachment and the characteristic 'flange' around the stem.

Photo title: Gennaeocrinus variabilis

Taxa present: Gennaeocrinus variabilis

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Submitted on 2009-06-06 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This photo is of a nice Eldredgeops crassituberculata collected this year on a 'Friend's' field trip to the LaFarge quarry at Paulding, Ohio due to the courtesy of their management. The prepared block is 10' or 26 cm long by 7' or 18.5 cm at the widest and 5 3/4' or 15 cm at the narrower end. The Trilobite is 2 7/8' (7 cm) long and 1 1/2' or 4 cm across the cheek. Some small areas of pyrite adhere to the shell and look like shale.

Photo title: A Large Silica Trilobite

Taxa present: Eldredgeops rana crassituberculata

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Submitted on 2009-06-06 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This shows more detail in a closer view.

Photo title: A Close up View

Taxa present: Eldredgeops rana crassituberculata

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Submitted on 2009-06-06 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: Since much of the material on this site is prepared, it was thought to show how this trilobite appeared when collected in the field. As you see, there is very little showing when many of these fossils are being collected.

Photo title: Unprepared or field view of Trilobite

Taxa present: Eldredgeops rana crassituberculata

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: An unusual crinoid calyx

Photo title: CRINOID CALYX

Taxa present: Atractocrinus concinnus

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Another view of an unusual crinoid

Photo title: CRINOID CALYX

Taxa present: Atractocrinus concinnus

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Rockport, Alpena, MI

Strat unit: Bell formation

Submitter notes: This crinoid measures 22mm X 29mm.

Photo title: CRINOID CALYX

Taxa present: Synbathocrinus sp.

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