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Protitanichthys cf. rockportensis |
Arkona formation |
Mike Topor |
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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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Protitanichthys sp. |
Arkona formation |
Mike Topor |
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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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Protitanichthys sp. |
Arkona formation |
Mike Topor |
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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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Holonema sp. |
Arkona formation |
Mike Topor |
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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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Eridophyllum subcaespitosum, Thamnoptychis elegantula |
Hungry Hollow formation |
Mike Topor |
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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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Pleurodictyum insigne |
Hungry Hollow formation |
Mike Topor |
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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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Pleurodictyum insigne |
Hungry Hollow formation |
Mike Topor |
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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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Rhinocaris sp. |
Arkona formation |
Mike Topor |
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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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Echinocaris punctata |
Arkona formation |
Mike Topor |
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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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Leptotrypella quadrangularis, Mucrospirifer arkonensis |
Arkona formation |
Mike Topor |
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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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Leptotrypella quadrangularis, Mucrospirifer arkonensis |
Arkona formation |
Mike Topor |
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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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Eumetabolotoechia cf. multicostum |
Widder formation |
Mike Topor |
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Submitted on 2008-11-06 by Mike Topor
Location (approximate): Arkona, Lambton, ON
Strat unit: Widder formation
Submitter notes: A common fossil in the Widder formation. Although these are nice plump specimens, most are not. The largest specimen of the four measures 28mm X 25mm. (Formerly known as Leiorhynchus)
Photo title: Brachiopod
Taxa present: Eumetabolotoechia cf. multicostum
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Petrocrania hamiltoniae |
Hungry Hollow formation |
Mike Topor |
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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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Bactrites arkonensis |
Arkona formation |
Mike Topor |
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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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Undescribed sp. |
Hungry Hollow formation |
Mike Topor |
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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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Euryocrinus laddii |
Arkona formation |
Mike Topor |
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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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Euryocrinus laddii |
Arkona formation |
Mike Topor |
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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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Decadocrinus multidosus |
Hungry Hollow formation |
Mike Topor |
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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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Decadocrinus multidosus |
Hungry Hollow formation |
Mike Topor |
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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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Eutaxocrinus whiteavesi |
Widder formation |
Mike Topor |
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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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