Submitted on 2009-02-05 by John Topor

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This brachiopod is common in unit 7. Specimens can show a great range of variation. The largest specimen in the photo measures 35mm x 36mm.

Photo title: Brachiopods

Taxa present: Pseudoatrypa devoniana

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Submitted on 2009-02-05 by John Topor

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A large gastropod found in units 7-9. The specimen on the left in the photo measures 44mm x 35.5mm and the right is 42.5mm x 39mm.

Photo title: Gastropod

Taxa present: Platyceras bucculentum

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Submitted on 2009-02-05 by John Topor

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: These three fine specimens were found together in the Medusa North Quarry. Note the different poses as they were not found on the same plane but were sort of loosely entwined. The one on the left measures 41.5mm x 28mm, Top right is 45.5mm x 26mm and lower right is 41mm x 23mm. Commonly known as Phacops.

Photo title: Trilobite Trio

Taxa present: Eldredgeops milleri

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Submitted on 2009-02-05 by John Topor

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: One of four different genera that are found in this formation. This is a large specimen for the species. It measures 25.6mm high x 15mm at the widest point.

Photo title: Blastoid

Taxa present: Hyperoblastus bassleri

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This large, nearly complete, as yet undescribed, conularid is rare in the Arkona formation. We have only collected three nearly complete specimens in over thirty five years. Therefore, all fragments should be collected. They are paper thin and require careful handling. This specimen measures 128mm tall and 120mm at the widest point.

Photo title: CONULARID

Taxa present: Conularia ? sp.

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This small fragment of an undescribed conularid is rare in the Arkona formation. Therefore, all fragments should be collected. They are paper thin and require careful handling. This specimen measures 59mm tall and 45mm at the widest point.

Photo title: CONULARID

Taxa present: Conularia ? sp.

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This small fragment of an undescribed conularid is rare in the Arkona formation. Therefore, all fragments should be collected. They are paper thin and require careful handling. This specimen measures 74mm tall and 40mm at the widest point.

Photo title: CONULARID

Taxa present: Conularia ? sp.

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Finding blastoid multiples is very rare in the Hungry Hollow Mb. This small slab has four specimens. It measures 78mm X 41mm. The largest blastoid is 15mm tall and 9mm in diameter.

Photo title: BLASTOID

Taxa present: Hyperoblastus filosa

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: A beautiful complete crown collected at Hungry Hollow. This view shows the calyx. It measures 30mm tall and 33mm at the widest part of the arms.

Photo title: CRINOID CROWN

Taxa present: Gennaeocrinus mourantae

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: A beautiful complete crown collected at Hungry Hollow. This view shows a top view of it's arms. It measures 30mm tall and 33mm at the widest part of the arms.

Photo title: CRINOID CROWN

Taxa present: Gennaeocrinus mourantae

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This incomplete specimen shows the exposed tegmen along with it's spines. This crown measures 26mm tall and is 33mm at the widest part of it's arms.

Photo title: CRINOID CROWN

Taxa present: Gennaeocrinus mourantae

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A beautiful cluster of eight blastoids on matrix measuring 33mm X 50mm. The blastoid on the far left measures 15mm tall and 10mm in diameter.

Photo title: BLASTOID

Taxa present: Devonoblastus whiteavesi

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A view showing the ambulacra of two robust large specimens. The blastoid on the left measures 18mm tall and 14mm in diameter. The one on the right measures 16mm tall and 13mm in diameter.

Photo title: BLASTOID

Taxa present: Devonoblastus whiteavesi

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: An oral view of the previous two robust large specimens. The blastoid on the left measures 18mm tall and 14mm in diameter. The one on the right measures 16mm tall and 13mm in diameter.

Photo title: BLASTOID

Taxa present: Devonoblastus whiteavesi

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A basal view of the previous two robust large specimens. The blastoid on the left measures 18mm tall and 14mm in diameter. The one on the right measures 16mm tall and 13mm in diameter.

Photo title: BLASTOID

Taxa present: Devonoblastus whiteavesi

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A rare and sought after stemless blastoid that evolved to lay on the substrate. There is only one species worldwide for the genus Eleutherocrinus. This view shows the long ambulacra of this blastoid's theca. The specimen on the left measures 14mm X 9mm. The middle specimen measures 17mm X 12mm, and the largest specimen on the right measures 19mm X 14.5mm.

Photo title: BLASTOID

Taxa present: Eleutherocrinus cassedayi

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A rare and sought after stemless blastoid that evolved to lay on the substrate. There is only one species worldwide for the genus Eleutherocrinus. This view shows the evolved 'flat' plates of this blastoid's theca. The specimen on the left measures 14mm X 9mm. The middle specimen measures 17mm X 12mm, and the largest specimen on the right measures 19mm X 14.5mm.

Photo title: BLASTOID

Taxa present: Eleutherocrinus cassedayi

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A rare and sought after stemless blastoid that evolved to lay on the substrate. There is only one species worldwide for the genus Eleutherocrinus. This side view shows the living position of this blastoid. The specimen on the left measures 14mm X 9mm and the larger specimen on the right measures 19mm X 14.5mm.

Photo title: BLASTOID

Taxa present: Eleutherocrinus cassedayi

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A rare and sought after stemless blastoid that evolved to lay on the substrate. There is only one species worldwide for the genus Eleutherocrinus. This is a basal view, in the living position, of this blastoid's theca. The specimen on the left measures 14mm X 9mm. The middle specimen measures 17mm X 12mm, and the largest specimen on the right measures 19mm X 14.5mm.

Photo title: BLASTOID

Taxa present: Eleutherocrinus cassedayi

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Submitted on 2010-11-04 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A rare and sought after stemless blastoid that evolved to lay on the substrate. There is only one species worldwide for the genus Eleutherocrinus. This is an oral view, in the living position, showing the one shortened ambulacra of this blastoid's theca. The specimen on the left measures 14mm X 9mm. The middle specimen measures 17mm X 12mm, and the largest specimen on the right measures 19mm X 14.5mm.

Photo title: BLASTOID

Taxa present: Eleutherocrinus cassedayi

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