Submitted on 2008-11-07 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This piece contains three crinoid crowns and a very large conularid.

Photo title: Crinoid crowns with a Conularid

Taxa present: Arthroacantha carpenteri, Conularia sp.

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Material of this sort(thin film) is difficult to collect in the soft shales. I believe this is a lateral plate of the creature's carapace. It measures 102mm long X 44mm wide

Photo title: Phyllocarid

Taxa present: Rhinocaris sp.

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Bottom View: An extremely rare find in the H.H. member This is the only specimen we have seen. Collected by Richard Barnard. Dime for size.

Photo title: Colony Coral

Taxa present: Pleurodictyum insigne

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: An extremely rare find in the H.H. member This is the only specimen we have seen. Collected by Richard Barnard. Dime for size.

Photo title: Colony Coral

Taxa present: Pleurodictyum insigne

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This branching tetracoral is very common in the H.H. member but is usually found in pieces. It was reconstructed. A specimen of Thamnoptychis(Trachypora) branches within the Eridophyllum. The specimen measures 75mm X 76mm. The Thamnoptychis is 42mm long.

Photo title: Branching Coral

Taxa present: Eridophyllum subcaespitosum, Thamnoptychis elegantula

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: These are the only fragments of this genus from the Arkona formation that I have collected. They are very rare. The largest plate measures 27mm X 21mm.

Photo title: Armored Fish Plates

Taxa present: Holonema sp.

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Dental elements are uncommon in the Arkona formation. This 'Ptychodont' lower jaw measures 90mm in length and 25mm at the thickest point.

Photo title: Armored Fish Dental Element

Taxa present: Protitanichthys sp.

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Many dental elements are classified under the name 'Ptychodont'. I assume that this specimen belongs to this genus. The specimen measures 48mm X 48mm.

Photo title: Armored Fish Dental Element

Taxa present: Protitanichthys sp.

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: A typical fish plate from this formation. This one is on a concretion. Most fish material is fragmentary. This specimen measures 83mm X 62mm.

Photo title: Armored Fish Plate

Taxa present: Protitanichthys cf. rockportensis

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: These gastrointestinal mandibles are very rare in the Arkona formation as are any parts of this animal. It measures 16mm in length.

Photo title: Phyllocarid Mandibles

Taxa present: Echinocaris punctata

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Top view: This is a rare occurance of a brachiopod totally encrusted with a branching Bryozoan. It may well have been caused by a reworked environment. The specimen measures 52mm in length and 19mm at the widest point.

Photo title: Bryozoan Encrusted Brachiopod

Taxa present: Leptotrypella quadrangularis, Mucrospirifer arkonensis

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Bottom view: This is a rare occurance of a brachiopod totally encrusted with a branching Bryozoan. It may well have been caused by a reworked environment. The specimen measures 52mm in length and 19mm at the widest point.

Photo title: Bryozoan Encrusted Brachiopod

Taxa present: Leptotrypella quadrangularis, Mucrospirifer arkonensis

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: A rare crinoid crown from the lower Widder formation. The specimen measures 40mm high and is 16.5mm wide.

Photo title: Crinoid Crown

Taxa present: Eutaxocrinus whiteavesi

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: View 2: The only specimen of this cladid crinoid I found in the H.H. member in over thirty years of collecting. It measures 19mm high and 12.5mm wide.

Photo title: Crinoid Calyx

Taxa present: Decadocrinus multidosus

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: View 1: The only specimen of this cladid crinoid I found in the H.H. member in over thirty years of collecting. It measures 19mm high and 12.5mm wide.

Photo title: Crinoid Calyx

Taxa present: Decadocrinus multidosus

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: View 2: Although never formally described to the species level, this very rare crinoid from the Arkona formation is similar to the Silica formation species. It measures 20mm high and 11mm wide.

Photo title: Crinoid

Taxa present: Euryocrinus laddii

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: View 1: Although never formally described to the species level, this very rare crinoid from the Arkona formation is similar to the Silica formation species. It measures 20mm high and 11mm wide.

Photo title: Crinoid

Taxa present: Euryocrinus laddii

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Due to the rarity of fragments in the H.H. member this echinoid remains undescribed. This good specimen shows parts of the lantern(oral opening) in the lower half of the photo. The specimen measures 40mm X 40mm.

Photo title: Echinoid

Taxa present: Undescribed sp.

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: A highly pyritized and nearly complete straight cephalopod collected on matrix. This common species is rarely found on matrix. It measures about 40mm in length.

Photo title: Cephalopod

Taxa present: Bactrites arkonensis

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Submitted on 2008-11-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This brachiopod is common in the formation. They attach to many different species of corals. All are single valves. The largest brachiopod in the photo measures 41mm X 34mm.

Photo title: Inarticulate Brachiopod

Taxa present: Petrocrania hamiltoniae

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