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 2010-04-10 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A nice blastoid

Photo title: Blastoid

Taxa present: Hyperoblastus reimanni

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A rare double from a huge quarry dump pile. This shows the delicate brachioles and a bit of stem for each tiny blastoid. The entire piece is about 1' or 2.5 cm

Photo title: Blastoid Crowns

Taxa present: Hyperoblastus reimanni

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A nice specimen with braichioles

Photo title: Blastoid

Taxa present: Hyperoblastus reimanni

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A very nice top view of an enrolled specimen.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A very nice pygidial view of an enrolled specimen. This specimen is 1/2 inch or .14 mm at the widest points

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A frontal view of an enrolled specimen. The specimen is .6 of an inch or 15. mm high in this view.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2010-04-10 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A very nice side view of an enrolled specimen. This little guy is .44 of an inch or 11 mm high in this view.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Submitted on 2010-05-04 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This small cluster of coralites is about 2 1/4 inches (5 cm) long and the individual tiny corals are about 2.9 mm wide.

Photo title: Aulocystis auloporoidea, coral cluster

Taxa present: Aulocystis auloporoidea

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Submitted on 2010-05-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Although a rather common species from the Thunder Bay Limestone of Alpena, This blastoid has not been added to the site before. It is 5/8 inch (15.3 mm) long by 3/8 inch (8.6 mm) wide

Photo title: Heteroschisma subtruncatum from Alpena

Taxa present: Heteroschisma subtruncatum

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Submitted on 2010-05-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: The ambuulacral area of the previous specimen

Photo title: Second view of blastoid

Taxa present: Heteroschisma subtruncatum

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Submitted on 2010-05-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This coral group is about 4 inches (10 cm) long by 1 3/4 inches (4.2 cm) wide. The individual coralites are about 1/4 inch (6. mm) in diameter or about the size of an eraser of a pencil. This small grouping is on a larger plate measuring some 8 inches.

Photo title: Aulophyllum alpenensis, coral cluster

Taxa present: Aulophyllum alpenensis

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Submitted on 2010-05-04 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Dundee formation

Submitter notes: This is an unprepared example of a Rostroconch from Paulding. This was found by Alex Fabian who, knowing my interest, let me collect this specimen. Thanks, Alex.

Photo title: Rostroconch from Paulding

Taxa present: Conocardium cuneus

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Submitted on 2010-05-04 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: This is a slightly close up view of the Aulophyllum sp. This specimen shows ammonites from the Squaw Bay formation on the reverse side.

Photo title: another view of corals

Taxa present: Aulophyllum alpenensis

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Submitted on 2010-11-26 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: There is just a bit of the phosphate 'shell' of a conularid to the right of the trilobite molt on this shale. The molt is 11.8mm wide for scale. Collected from the Silica formation at the old Martin-Marietta Quarry near Milan, MI. This photo was taken under a stereozoom microscope.

Photo title: Conularid Fragment with Trilobite Molt

Taxa present: Eldredgeops sp., Conularia ?

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Submitted on 2010-11-26 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: A close-up view of the phosphate 'shell' of a conularid to the left of the trilobite molt on this shale. The molt is 11.8mm wide for scale. Collected from the Silica formation at the old Martin-Marietta Quarry near Milan, MI. This photo was taken under a stereozoom microscope.

Photo title: Close-up of Conularid Fragment

Taxa present: Conularia ?

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Submitted on 2010-11-26 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A small blasoid from the Hungry Hollow formation of Middlesex County, Ontario. Theis specimen measures 10 mm long.

Photo title: Hyperoblastus preciosus

Taxa present: Hyperoblastus preciosus

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Submitted on 2010-11-26 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Both of these blastoids were collected from the Mid Devonian, Hungry Hollow formation of Ontario, Canada. The largest is 13.3 mm high by 8 mm wide and collected in 1996. The second smaller is 11.6 mm by 7 mm wide and collected in 1997.

Photo title: 2 Hyperoblastus filosa Blastoids

Taxa present: Hyperoblastus filosa

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Submitted on 2010-11-26 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Some examples of this blastoid from the Hungry Hollow member of the Arkona area. The largest is 11.2 mm long. Another shows ventral view with ambulacra. Not all of these were collected at the same time, some are years apart.

Photo title: Heteroschisma canadensis

Taxa present: Heteroschisma canadensis

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Submitted on 2010-11-26 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Genshaw formation

Submitter notes: These tiny blastoids are collected from the Upper Genshaw of Alpena. The smallest is 5 mm and the largest is 5.72 mm. Two grains of rice are added for scale and the rice is 7.2 mm long. These tiny blastoids are in weathered black shales and are very difficult to find in the huge Lafarge Quarry in Alpena.

Photo title: Undescribed Heteroschisma blastoids

Taxa present: Heteroschisma sp.

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