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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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 2011-08-03 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Genshaw formation

Submitter notes: This specimen is 10.5 cm across.

Photo title: Cephalopod

Taxa present: Michelinoceras sp.

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Submitted on 2011-08-11 by Peter Lee

Location (approximate): Arkona, Lambton, ON

Strat unit: Hamilton formation

Submitter notes: Primitive Early Shark teeth from Middle Devonian Omalodus grabaui (Hussakof & Bryant, 1918). Specimen was identified by Dr. Michal Ginter (Poland) Found in the South Pit.... Limestone blocks had fallen from high strata to the floor of the pit. 28 Frames stacked with Helicon Focus: 4x plan objective + Nikon 995 + polarizer... approx 64X magnification. Base of the Teeth approx 4mm span.

Photo title: Primitive Early Shark teeth from Middle Devonian Omalodus grabaui

Taxa present: Omalodus grabaui

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Submitted on 2011-08-14 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This is another tiny pyritized crinoid from the Silica shale showing 11. mm of stem into cup that is 10.7 mm wide. The protective spines of this species did not protect it from the gastropod (possibly bucculentum sp.) from getting onto the tegmen.

Photo title: Crown of Gilbertsocrinus ohioensis with gastropod

Taxa present: Gilbertsocrinus ohioensis, Platyceras bucculentum

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Submitted on 2011-08-14 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This photo shows the complete piece with a US ten cent piece for scale.

Photo title: Second view of Gilbertsocrinus

Taxa present: Gilbertsocrinus ohioensis, Platyceras bucculentum

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Submitted on 2011-11-05 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Dundee formation

Submitter notes: Rostroconch after preparation & cleaning. This unusual fossil was shown before cleaning on this site.

Photo title: Conocardium cuneus

Taxa present: Conocardium cuneus

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Submitted on 2011-11-05 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Dundee formation

Submitter notes: A slightly different view emphasizing the structure of the shell. A U.S. ten cent piece is for scale.

Photo title: Conocardium cuneus from the Dundee Fm., Paulding Co. OH

Taxa present: Conocardium cuneus

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Submitted on 2011-11-05 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This is the tiniest complete Eldredgeops (Phacops) trilobite I have seen or found. The eyes are so tiny I can not determine the species although it did come from Sylvania, Ohio. It is complete but only a few millimeters long as seen by the comparison with the U.S. Ten cent piece next to it. Far rarer then the larger trilobites this site is famous for.

Photo title: A very tiny Eldredgeops (Phacops) trilobite

Taxa present: Eldredgeops

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Submitted on 2011-11-05 by David Thompson

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Again shown with a dime for scale. This is the negative to the positive of the little trilobite shown in previous photo.

Photo title: The negative counterpart for the tiny Eldredgeops in the previous photo

Taxa present: Eldredgeops

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Submitted on 2011-11-05 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This shows to good effect the varied decorations on the calyx of this species of Megistocrinus. This very large Caylx comes from Partridge Point in Alpena. Unfortunately the entire opposite side is covered with a very hard limey Bryazoan that completely obscures it and only this side, bottom and tegmen could be cleaned and seen.

Photo title: Large Caylx of Megiatocrinus multidecoratus from Alpena

Taxa present: Megistocrinus multidecoratus

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Submitted on 2011-11-05 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This shows a slightly different view with natural coloring to show the decorations.

Photo title: A differing view of the Megistocrinus

Taxa present: Megistocrinus multidecoratus

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Submitted on 2011-11-05 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This species of Brachiopod, Leiorhynchus kelloggi, from the silica shale often has significant amounts of the original nacre or Mother of Pearl still visible and sparkling after 375 Million years. This example from Milan, Michigan has a large amount of the original shell still shining after all these millions of years!

Photo title: A Silica Brachiopod with iridescent nacre.

Taxa present: Leiorhynchus kelloggi

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Submitted on 2011-11-05 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This shows the brachiopod with a U.S. ten cent piece for scale.

Photo title: Another view of same brachiopod

Taxa present: Leiorhynchus kelloggi

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Submitted on 2011-11-29 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: The specimen is 4 inches across.

Photo title: Coral

Taxa present: Favosites placenta

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Submitted on 2011-11-29 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: The cephalopod is 6 inches across.

Photo title: Cephalopod

Taxa present: Michelinoceras sp.

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