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Stropheodonta erratica |
Genshaw formation |
ummp invertebrate paleontology |
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Submitted on 2008-07-19 by ummp invertebrate paleontology
Location (approximate): , Alpena, MI
Strat unit: Genshaw formation
Submitter notes: The specimens are 2 cm across.
Photo title: Brachiopods
Taxa present: Stropheodonta erratica
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Stuartella traversensis |
Traverse formation |
ummp invertebrate paleontology |
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Submitted on 2008-07-19 by ummp invertebrate paleontology
Location (approximate): , Emmet, MI
Strat unit: Traverse formation
Submitter notes: The large specimen is 2.7 cm top to bottom. These were found along the shore of Little Traverse Bay.
Photo title: Brachiopods
Taxa present: Stuartella traversensis
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Cyrtina hamiltonensis |
Widder formation |
ummp invertebrate paleontology |
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Submitted on 2008-07-19 by ummp invertebrate paleontology
Location (approximate): Thedford, Lambton, ON
Strat unit: Widder formation
Submitter notes: The average size is 1.7 cm across.
Photo title: Brachiopods
Taxa present: Cyrtina hamiltonensis
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Cyrtina umbonata alpenensis |
Genshaw formation |
ummp invertebrate paleontology |
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Submitted on 2008-07-19 by ummp invertebrate paleontology
Location (approximate): , Alpena, MI
Strat unit: Genshaw formation
Submitter notes: The average size of the specimens is 2 cm across.
Photo title: Brachiopods
Taxa present: Cyrtina umbonata alpenensis
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Pholidostrophia ovata |
Norway Point formation |
ummp invertebrate paleontology |
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Submitted on 2008-07-19 by ummp invertebrate paleontology
Location (approximate): , Alpena, MI
Strat unit: Norway Point formation
Submitter notes: The specimen is 1.7 cm across.
Photo title: Brachiopod
Taxa present: Pholidostrophia ovata
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Protoleptostrophia perplana |
Silica formation |
ummp invertebrate paleontology |
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Submitted on 2008-07-19 by ummp invertebrate paleontology
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: The large specimen is 4.2 cm across.
Photo title: Brachiopods
Taxa present: Protoleptostrophia perplana
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Rhipidomella penelope |
Widder formation |
ummp invertebrate paleontology |
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Submitted on 2008-07-20 by ummp invertebrate paleontology
Location (approximate): Arkona, Lambton, ON
Strat unit: Widder formation
Submitter notes: The large specimen is 4 cm across.
Photo title: Brachiopods
Taxa present: Rhipidomella penelope
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Dolatocrinus liratus |
Thunder Bay formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This closeup shows the tegmen to advantage
Photo title: Another view of the same Crinoid
Taxa present: Dolatocrinus liratus
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Megistocrinus nodosus |
Thunder Bay formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: Collected in 1994, Ken had many years to enjoy this wonderful example of Megistocrinus before he died a few years ago. We collected this at Partridge Point in Alpena and the crinoid was completely covered with bryozoans that can still be seen covering the plate. Ken, at the time, was not optimistic about how this would turn out and until it was cleaned by Scott Vergiels, he did not know what a treasure he had.
Photo title: This magnificent complete crinoid was the pride of Ken Dobson's collection
Taxa present: Megistocrinus nodosus
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Dolatocrinus liratus |
Thunder Bay formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This example of a complete Dolatocrinus shows all the parts in the round. Two arms are missing but this allows the tegmen to be seen.
Photo title: A beautiful complete crinoid in matrix with stem and arms.
Taxa present: Dolatocrinus liratus
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Protitanicthys rockportensis |
Silica formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Milan, Washtenaw, MI
Strat unit: Silica formation
Submitter notes: This image is of a large plate from the head of a Devonian Fish. The Nuchal plate was at the very back of the top of the head and the notch at the top of the photo would have been the back towards the tail area. U.S. ten cent piece for scale.
Photo title: Large, Nearly Complete, Nuchal plate from Devonian Arthrodire Fish
Taxa present: Protitanicthys rockportensis
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Protitanichthys rockportensis |
Silica formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: This plate shows the extensive 'armor' of these early fish
Photo title: Another Arthrodire fish plate from the Ken Dobson collection
Taxa present: Protitanichthys rockportensis
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Paraspirifer bownockeri, Hederella , Cornulites , Clionoides |
Silica formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: These three Paraspirifer bownockeri brachiopods show Hederella bryozoa on the bottom fossil and Cornulites worm scars, and the holes made by Clionoides, a boring sponge on the upper left example. From the Ken Dobson Collection.
Photo title: A Lovely cluster of Large Silica Brachiopods in matrix with epifauna.
Taxa present: Paraspirifer bownockeri, Hederella , Cornulites , Clionoides
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Paraspirifer bownockeri |
Silica formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes:
Photo title: A different view of brachiopod plate.
Taxa present: Paraspirifer bownockeri
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Onychodus sp. |
Genshaw formation |
David Clark |
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Submitted on 2008-10-07 by David Clark
Location (approximate): Alpena, Alpena, MI
Strat unit: Genshaw formation
Submitter notes: Fish tooth from the Genshaw formation. A second tooth is located on the back side of the plate
Photo title:
Taxa present: Onychodus sp.
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Tornoceras , unidentified cephalopod , Arthroacantha carpentari, Rhipidomella penelope |
Arkona formation |
Ken Dobson |
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Submitted on 2014-10-08 by Ken Dobson
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: This collection of small pyritized fossils includes a brachiopod, a crinoid calyx, and two cephalopods, one straight and the other coiled. All but the brachiopod are from Arkona, Ontario. The Brach is from Milan, Michigan.
Photo title: A collection of small pyritized fossils from the Ken Dobson collection
Taxa present: Tornoceras , unidentified cephalopod , Arthroacantha carpentari, Rhipidomella penelope
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Onychodus sp. |
Genshaw formation |
David Clark |
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Submitted on 2008-10-07 by David Clark
Location (approximate): Alpena, Alpena, MI
Strat unit: Genshaw formation
Submitter notes: Fish tooth from the Genshaw formation. This is the second tooth and is located on the back side of the plate
Photo title:
Taxa present: Onychodus sp.
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Placoblastus obovatus |
Thunder Bay formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This large Placoblastus blastoid is in matrix and slightly crushed.
Photo title: Large Devonian blastoid from Alpena, MI
Taxa present: Placoblastus obovatus
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Placoblastus obovatus |
Thunder Bay formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This shows two additional blastoids free of matrix but weathered somewhat.
Photo title: Two additional blastoids from Alpena, MI
Taxa present: Placoblastus obovatus
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Orthospirifer cooperi, Petrocrania hamiltonae, Hederella |
Silica formation |
Ken Dobson |
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Submitted on 2008-10-07 by Ken Dobson
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: The muddy bottom of the Devonian seas over Michigan seemed to have few hard places for animals to attach and therefore almost any hard surface was prime real estate. This inarticulate has attached itself to the larger brachiopod for a safe place but this proved a mistake as they died togather. Some small bryozoan also have grown on both.
Photo title: A Large Brachiopod with a small inarticulate Brachiopod attached.
Taxa present: Orthospirifer cooperi, Petrocrania hamiltonae, Hederella
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