Submitted on 2007-03-05 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This horn coral from the Hungry Hollow member is not common in the formation. This specimen is a very fine example. The coral is approximately 85mm long with a cup diameter of 45mm.

Photo title: Solitary Coral

Taxa present: Bethanyphyllum robustum

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Submitted on 2007-03-05 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: The photo shows three different views of three specimens. On the left is the top view showing the tegmen, the center shows a side view of the plate ornamentation, and on the right shows the stem attachment area. Of all the crinoids that occur in the formation, your best chance is finding this Dolatocrinus sp. However, all crinoids in the Hungry Hollow member are rare. See scale in photo for size.

Photo title: Crinoid Calyxes

Taxa present: Dolatocrinus bulbaceous

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Submitted on 2007-03-05 by Mike Topor

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Heliophyllum halli comprises the bulk of the solitary coral species found in the “coral zone” of the Hungry Hollow member. They are the most common coral to be found there. These two specimens are slightly smaller than average, but show the general form well. The diameter of the specimen on the left is 39mm. The length of the coral on the right is 67mm and the width is 42mm.

Photo title:

Taxa present: Heliophyllum halli

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Submitted on 2007-03-05 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Trilobite fragments in the Hungry Hollow member are common, but complete prone specimens are very rare due to the jumbled density of corals, etc. in the “coral zone”. This trilobite’s pygidium was beginning to tuck under when burial took place. See scale in photo for size.

Photo title:

Taxa present: Eldredgeops (Phacops) rana rana

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Submitted on 2007-03-06 by Mike Topor

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Views of the pedicle and brachial valves of two different specimens of the species. Rhipidomella vanuxemi is smaller than R. Penelope and not as common. The brachial valve is on the left and the pedicle valve on the right in the photo. These brachiopods are approximately 8mm thick. See scale in photo for size.

Photo title: Brachiopod

Taxa present: Rhipidomella vanuxemi

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Submitted on 2007-03-06 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Views of the pedicle and brachial valves of three different specimens of the species: The top row is one specimen with the valves separate, each showing internal structure. The bottom row is two different brachiopods with exterior views of the pedicle valve (left) and the brachial valve (right). The pedicle valve of the internal view is also on the left side of the photo. They are much larger than P. vanuxemi and common in the formation. The two specimens on the bottom row are approximately 8mm thick and 35mm wide x 36mm high.

Photo title: Brachiopod

Taxa present: Rhipidomella penelope

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Submitted on 2007-03-09 by David Thompson

Location (approximate): Thedford, Lambton, ON

Strat unit: Widder formation

Submitter notes: Two different species of horn corals from Arkona & Thedford, Ontario that have the distinct 'scar' of attachment, the bottom valve of the inarticulate braciopod, Petrocrania hamiltoniae, clearly showing. The coral on the left is probablly Cystiphyllum sp.? while the one on the right is Heliophyllum halli. A U.S. Ten Cent piece is for scale. The top valve of the Inarticulate is missing showing the interior muscle scars.

Photo title: Horn Corals with inarticulate attachments

Taxa present: Heliophyllum halli, Petrocrania hamiltoniae, Cystiphyllum

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Submitted on 2007-03-12 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: These complete specimens were removed from the Hungry Hollow member in several pieces and then glued back together. The right side of the photo shows the base of each coral. The longer specimen measures 125mm. The shorter is about 75mm (not counting the bend). The diameters vary from 12 to 30 plus millimeters.

Photo title: Coral

Taxa present: Favosites (Emmonsia) arbuscula

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Submitted on 2007-03-12 by John Topor

Location (approximate): Thedford, Lambton, ON

Strat unit: Widder formation

Submitter notes: Three weathered-out examples of this well-known, common brachiopod. In the photo, the top right and bottom specimens show the brachial valve view and the top left shows the pedicle valve view. The largest is 52mm long, and the smallest is 40mm in length.

Photo title: Brachiopods

Taxa present: Mucrospirifer thedfordensis

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Submitted on 2007-03-12 by John Topor

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: From the left in the photo, three different blastoid thecas showing the basal, side and summit views of the Genus, Devonoblastus. The height of these specimens ranges from 15 to 18 millimeters.

Photo title: Blastoid Theca

Taxa present: Devonoblastus whiteavesi

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Submitted on 2007-09-07 by Mike Palescuk

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes:

Photo title: Trilobite

Taxa present: Basidechenella rowi arkonensis

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Submitted on 2011-12-27 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Beautifully preserved Basidechenella with the axial spines. The Eldredgeops on the bottom right is a molt and missing it's head.

Photo title: Trilobite cluster

Taxa present: Basidechenella arkonensis, Eldredgeops

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Submitted on 2007-10-11 by Jeffrey Mackin

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes:

Photo title: Phyllocarid

Taxa present: Echinocaris

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Submitted on 2007-11-04 by Scott Vergiels

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: The typical Hungry Hollow Nucleocrinus but with only 4 ambulacra rather than 5.

Photo title: Abnormal Blastoid

Taxa present: Nucleocrinus elegans

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Submitted on 2007-11-04 by Scott Vergiels

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Top view showing abnormal growth - only 4 ambulacra

Photo title: Abnormal Blastoid - Top View

Taxa present: Nucleocrinus elegans

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Submitted on 2007-11-06 by Joseph Koniecki

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Trilobite is about 1 inch.

Photo title: Trilobite

Taxa present: Crassiproetus crassimarginatus

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Submitted on 2007-11-06 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes:

Photo title: Brachiopods

Taxa present: Rhipidomella penelope

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Submitted on 2007-11-06 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes:

Photo title: Unusual Gastropod

Taxa present: Platyceras conicum

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Submitted on 2008-02-16 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes:

Photo title: Gastropod

Taxa present: Naticonema lineata

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Submitted on 2008-02-16 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes:

Photo title:

Taxa present: Phacops rana

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