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Hederella sp., Heracloceras inelegans, Aulopora sp. |
Silica formation |
Mike Palescuk |
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Submitted on 2010-04-10 by Mike Palescuk
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: A large ammonite (Goniatite) endocast with epifauna. This specimen measures 7.75 inches in diameter and is 3 inches thick. It has a Bryozoan, Hederella, on lower left of it's living chamber and the coral Aulopora on the septae (right side).
Photo title: Ammonite
Taxa present: Hederella sp., Heracloceras inelegans, Aulopora sp.
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Heracloceras inelegans, Aulopora sp. |
Silica formation |
Mike Palescuk |
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Submitted on 2010-04-10 by Mike Palescuk
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: The opposite side of the large ammonite (Goniatite) endocast with encrusting coral Aulopora. This specimen measures 7.75 inches in diameter and is 3 inches thick.
Photo title: Ammonite
Taxa present: Heracloceras inelegans, Aulopora sp.
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Arthroacantha carpenteri |
Silica formation |
Mike Palescuk |
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Submitted on 2010-04-11 by Mike Palescuk
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: A crown showing unusual preservation.
Photo title: Crinoid Crown
Taxa present: Arthroacantha carpenteri
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Aulocystis auloporoidea |
Silica formation |
David Thompson |
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Submitted on 2010-05-04 by David Thompson
Location (approximate): Paulding, Paulding, OH
Strat unit: Silica formation
Submitter notes: This small cluster of coralites is about 2 1/4 inches (5 cm) long and the individual tiny corals are about 2.9 mm wide.
Photo title: Aulocystis auloporoidea, coral cluster
Taxa present: Aulocystis auloporoidea
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Heteroschisma subtruncatum |
Thunder Bay formation |
David Thompson |
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Submitted on 2010-05-04 by David Thompson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: Although a rather common species from the Thunder Bay Limestone of Alpena, This blastoid has not been added to the site before. It is 5/8 inch (15.3 mm) long by 3/8 inch (8.6 mm) wide
Photo title: Heteroschisma subtruncatum from Alpena
Taxa present: Heteroschisma subtruncatum
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Heteroschisma subtruncatum |
Thunder Bay formation |
David Thompson |
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Submitted on 2010-05-04 by David Thompson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: The ambuulacral area of the previous specimen
Photo title: Second view of blastoid
Taxa present: Heteroschisma subtruncatum
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Aulophyllum alpenensis |
Thunder Bay formation |
David Thompson |
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Submitted on 2010-05-04 by David Thompson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This coral group is about 4 inches (10 cm) long by 1 3/4 inches (4.2 cm) wide. The individual coralites are about 1/4 inch (6. mm) in diameter or about the size of an eraser of a pencil. This small grouping is on a larger plate measuring some 8 inches.
Photo title: Aulophyllum alpenensis, coral cluster
Taxa present: Aulophyllum alpenensis
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Aulophyllum alpenensis |
Thunder Bay formation |
David Thompson |
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Submitted on 2010-05-04 by David Thompson
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This is a slightly close up view of the Aulophyllum sp. This specimen shows ammonites from the Squaw Bay formation on the reverse side.
Photo title: another view of corals
Taxa present: Aulophyllum alpenensis
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Gilbertsocrinus ohioensis |
Silica formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: A very tiny crinoid crown. The entire specimen measures 1.4 cm tall including the stem.
Photo title: Crinoid
Taxa present: Gilbertsocrinus ohioensis
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Arthroacantha carpenteri |
Silica formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: A very small crinoid crown. The crinoid measures 3cm from the tip of the arms to the bottom of the stem.
Photo title: Crinoid
Taxa present: Arthroacantha carpenteri
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Eospondylus sp. |
Silica formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: According to Dr. Fred Hotchkiss, this tiny brittle star is the first reported occurance of Eospondylus in the Silica Shale. This specimen measures 1.5 cm at its widest.
Photo title: Brittle Starfish
Taxa present: Eospondylus sp.
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Poteriocrinus arkonensis |
Arkona formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: This specimen measures 7 cm across the arms.
Photo title: Crinoid crown
Taxa present: Poteriocrinus arkonensis
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Poteriocrinus arkonensis |
Arkona formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: This specimen measures 3.8 cm from the tip of the anal tube to the calyx.
Photo title: Crinoid with anal tube
Taxa present: Poteriocrinus arkonensis
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Poteriocrinus arkonensis, Corocrinus calypso, Arthroacantha carpenteri |
Arkona formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: The Poteriocrinus measures 3.7 cm from the tip of the anal tube to the bottom of the stem.
Photo title: Plate of crinoids
Taxa present: Poteriocrinus arkonensis, Corocrinus calypso, Arthroacantha carpenteri
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Hyperoblastus filosa |
Hungry Hollow formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes: A gtoup of two blastoids with the one on the right measuring 1 cm.
Photo title: Blastoids
Taxa present: Hyperoblastus filosa
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Hyperoblastus decipiens |
Arkona formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: A rare Arkona formation blastoid that measures 1.5 cm.
Photo title: Blastoid
Taxa present: Hyperoblastus decipiens
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Hyperoblastus decipiens |
Arkona formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: An immature specimen of this blastoid. The entire specimens measures 1.6 cm including brachioles and stem.
Photo title: Blastoid with brachioles
Taxa present: Hyperoblastus decipiens
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Corocrinus calypso |
Arkona formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: This tiny specimen is 2 cm across.
Photo title: Crinoid crown
Taxa present: Corocrinus calypso
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Corocrinus calypso |
Arkona formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: A tiny specimen in the starburst position. This specimen is 4 cm across.
Photo title: Crinoid crown
Taxa present: Corocrinus calypso
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Corocrinus calypso |
Arkona formation |
Joseph Koniecki |
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Submitted on 2010-10-26 by Joseph Koniecki
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: This specimen measures 3.4 cm from the arm to the base of the stem.
Photo title: Crinoid
Taxa present: Corocrinus calypso
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