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Proctothylacocrinus longus |
Silica formation |
Joseph Koniecki |
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Submitted on 2008-02-15 by Joseph Koniecki
Location (approximate): Paulding, Paulding, OH
Strat unit: Silica formation
Submitter notes: Crinods from the Silica Shale at Paulding are extremely rare. Very few have been found.
Photo title:
Taxa present: Proctothylacocrinus longus
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Arthroacantha carpenteri |
Arkona formation |
Joseph Koniecki |
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Submitted on 2008-02-15 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: Note the gastropod with spines sitting on top of the calyx. This association is not unusual but to be able to see the spines on the gastropod is uncommon.
Photo title: Crinoid with gastropod
Taxa present: Arthroacantha carpenteri
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Protitanichthys Rockportensis |
Traverse formation |
David Thompson |
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Submitted on 2008-01-28 by David Thompson
Location (approximate): Milan, Washtenaw, MI
Strat unit: Traverse formation
Submitter notes: This is a rather large and thick piece of Arthrodire fish armor from the Silica Shale at the Martin-Marrietta Quarry in Milan, Michigan. The shield shows sensory lines at the edges and the characteristic 'bumps' over the bone.
Photo title: Protitanichthys cf. rockportensis, Cocosteomorph Fish Armor
Taxa present: Protitanichthys Rockportensis
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Protitanichthys rockportensis |
Traverse formation |
David Thompson |
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Submitted on 2008-01-28 by David Thompson
Location (approximate): Milan, Washtenaw, MI
Strat unit: Traverse formation
Submitter notes: The Phylum is Chordata, Subphylum Vertebrata, Class Elasmobranchiomorpha,
Subclass Placoderm, Order Arthrodire, suborder Brachythoraci, Family Coccosteidae, Genus Protitanichthys. This shows some of the thickness of the bony shield. US .25 coin for scale.
Photo title: Second view of Protitanichthys, Devonian Fish Plate
Taxa present: Protitanichthys rockportensis
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Hyperoblastus decipiens |
Arkona formation |
Joseph Koniecki |
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Submitted on 2007-11-28 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: This is an extremely rare specimens with the brachioles attached. It is, however, not surprising that a few have been found considering the excellent preservation of other fossils in the Arkona Formation.
Photo title: Hyperoblastus with brachioles
Taxa present: Hyperoblastus decipiens
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Platyceras conicum |
Hungry Hollow formation |
Joseph Koniecki |
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Submitted on 2007-11-06 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes:
Photo title: Unusual Gastropod
Taxa present: Platyceras conicum
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Rhipidomella penelope |
Hungry Hollow formation |
Joseph Koniecki |
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Submitted on 2007-11-06 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes:
Photo title: Brachiopods
Taxa present: Rhipidomella penelope
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Crassiproetus crassimarginatus |
Hungry Hollow formation |
Joseph Koniecki |
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Submitted on 2007-11-06 by Joseph Koniecki
Location (approximate): Thedford, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes: Trilobite is about 1 inch.
Photo title: Trilobite
Taxa present: Crassiproetus crassimarginatus
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Dechenella alpenensis |
Genshaw formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Alpena, Alpena, MI
Strat unit: Genshaw formation
Submitter notes: Simply a nice little bug.
Photo title: Alpena Trilobite
Taxa present: Dechenella alpenensis
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Undescribed sp. |
Alpena formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: This is one of a handful of Devonian Cyclocystoids from North America and likely the only one from the basin.
Photo title: ? Rarest Michigan Basin Echinoderm
Taxa present: Undescribed sp.
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Acinetaster sp. |
Silica formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: Statistical anomoly - The most common Silica ophiuroid remains undescribed.
Photo title: Sylvania Ophiuroid
Taxa present: Acinetaster sp.
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Arthroacantha carpenteri, Logocrinus brandoni |
Silica formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: A common Silica Formation species of very uncommon size. The crown is approximately 11mm tall. The tinier specimen is a Logocrinus which is about 8mm in height.
Photo title: JUVENILE ARTHROACANTHA CROWN
Taxa present: Arthroacantha carpenteri, Logocrinus brandoni
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Eldredgeops crassituberculata |
Silica formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Swanton, Fulton, OH
Strat unit: Silica formation
Submitter notes: Virtually all Silica Formation Phacopids, regardless of their beautiful preservation are compressed to some degree. This one isn't. From within a limestone layer.
Photo title: Absolutely Uncompressed Silica Eldredgeops
Taxa present: Eldredgeops crassituberculata
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Arthroacantha carpenteri |
Silica formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: A nice big specimen of the common Silica crinoid
Photo title: Sylvania Crinoid
Taxa present: Arthroacantha carpenteri
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Heteroschisma alatum |
Potter Farm formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Alpena, Alpena, MI
Strat unit: Potter Farm formation
Submitter notes: At about 19mm this blastoid is about twice the usual size for this species.
Photo title: 'Giant' Heteroschisma Blastoid
Taxa present: Heteroschisma alatum
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Heteroschisma alatum |
Potter Farm formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Alpena, Alpena, MI
Strat unit: Potter Farm formation
Submitter notes: Top view showing the ambulacra which measures 11mm across
Photo title: 'Giant' Heteroschisma Blastoid - Top View
Taxa present: Heteroschisma alatum
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Nucleocrinus elegans |
Hungry Hollow formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Arkona, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes: The typical Hungry Hollow Nucleocrinus but with only 4 ambulacra rather than 5.
Photo title: Abnormal Blastoid
Taxa present: Nucleocrinus elegans
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Nucleocrinus elegans |
Hungry Hollow formation |
Scott Vergiels |
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Submitted on 2007-11-04 by Scott Vergiels
Location (approximate): Arkona, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes: Top view showing abnormal growth - only 4 ambulacra
Photo title: Abnormal Blastoid - Top View
Taxa present: Nucleocrinus elegans
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Eutaxocrinus sp. |
Four Mile Dam formation |
Stan Hyne |
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Submitted on 2007-11-03 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Four Mile Dam formation
Submitter notes: Undescribed crinoid from the Dock Street Clay prepared by Scott Vergiels
Photo title: RARE CRINOID CROWN
Taxa present: Eutaxocrinus sp.
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Decorocrinus arkonensis |
Arkona formation |
Joseph Koniecki |
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Submitted on 2007-10-25 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: Decorocrinus arkonensis from the Devonian of Arkona, Ontario. Specimen is about 5 inches
Photo title: Crinoid crown with anal tube
Taxa present: Decorocrinus arkonensis
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