Submitted on 2010-04-10 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Another view of an unusual crinoid

Photo title: CRINOID CALYX

Taxa present: Atractocrinus concinnus

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Thedford, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This tiny trilobite measures 3.6mm wide and was photographed through a stereozoom microscope.

Photo title: Trilobite

Taxa present: Phacops rana rana

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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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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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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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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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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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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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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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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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Submitted on 2010-10-26 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: A very tiny specimen that measures 1.1 cm top to bottom.

Photo title: Crinoid

Taxa present: Corocrinus calypso

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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 is 6.5 cm tall.

Photo title: Coral

Taxa present: Aulocystis ramosa

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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 is 4.5 cm across.

Photo title: Coral

Taxa present: Aulocystis ramosa

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Submitted on 2010-10-26 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: The left specimen is 4 cm from the tip of the anal tube to the bottom of the stem.

Photo title: Plate of Crinoids

Taxa present: Decorocrinus arkonensis

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Submitted on 2010-10-26 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: The left specimen is 3.7 cm including the anal tube and stem.

Photo title: Plate of crinoids

Taxa present: Decorocrinus arkonensis

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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: 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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