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Hyperoblastus sp. |
Alpena formation |
Alex Fabian |
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Submitted on 2010-11-26 by Alex Fabian
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: A basal view of a very large, very rare, 'undescribed' blastoid collected by Bob Rutkowski. This specimen measures 31mm high and 30mm in diameter.
Photo title: BLASTOID
Taxa present: Hyperoblastus sp.
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Echinocaris ? |
Silica formation |
Stan Hyne |
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Submitted on 2010-11-26 by Stan Hyne
Location (approximate): Paulding, Paulding, OH
Strat unit: Silica formation
Submitter notes: A very good set of teeth probably from an Echinocaris. The specimen measures 27mm long.
Photo title: PHYLLOCARID MANDIBLE
Taxa present: Echinocaris ?
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Heteroschisma sp. |
Alpena formation |
Stan Hyne |
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Submitted on 2010-11-26 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: A group of small Heteroschisma blastoids probably from the Genshaw member. The largest specimen measures 9.25mm tall and 7.1mm in diameter, The smallest is 4.7mm x 3.5mm in diameter.
Photo title: BLASTOID
Taxa present: Heteroschisma sp.
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Heteroschisma sp. |
Genshaw formation |
Stan Hyne |
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Submitted on 2010-11-26 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Genshaw formation
Submitter notes: A side view of a Heteroschisma blastoid from the Genshaw member. The specimen measures 9.25mm tall and 7.1mm in diameter. This photo was taken under a stereozoom microscope.
Photo title: BLASTOID
Taxa present: Heteroschisma sp.
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Heteroschisma sp. |
Genshaw formation |
Stan Hyne |
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Submitted on 2010-11-26 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Genshaw formation
Submitter notes: An oral view of a Heteroschisma blastoid from the Genshaw member. The specimen measures 9.25mm tall and 7.1mm in diameter. This photo was taken under a stereozoom microscope.
Photo title: BLASTOID
Taxa present: Heteroschisma sp.
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Various sp. |
Traverse formation |
David Thompson |
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Submitted on 2010-11-26 by David Thompson
Location (approximate): Whitmore Lake, Washtenaw, MI
Strat unit: Traverse formation
Submitter notes: Various brachiopod fragments collected by Justin Florkowski, an 11 year-old member of the 'FRIENDS'. This specimen found is from glacial drift and measures 57.3mm x 41mm. Probably Traverse group.
Photo title: BRACHIOPOD
Taxa present: Various sp.
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Eldredgeops sp., Conularia ? |
Silica formation |
David Thompson |
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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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Conularia ? |
Silica formation |
David Thompson |
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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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Hyperoblastus preciosus |
Hungry Hollow formation |
David Thompson |
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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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Hyperoblastus filosa |
Hungry Hollow formation |
David Thompson |
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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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Heteroschisma canadensis |
Hungry Hollow formation |
David Thompson |
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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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Heteroschisma sp. |
Genshaw formation |
David Thompson |
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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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Heteroschisma sp. |
Genshaw formation |
David Thompson |
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Submitted on 2010-11-26 by David Thompson
Location (approximate): Alpena, Alpena, MI
Strat unit: Genshaw formation
Submitter notes: An oral view of one of the tiny blastoids collected from the Upper Genshaw of Alpena. The specimen is 5.72 mm tall. These tiny blastoids are in weathered black shales and are very difficult to find in the huge Lafarge Quarry in Alpena. This photo was taken under a stereozoom microscope.
Photo title: Undescribed Heteroschisma blastoid
Taxa present: Heteroschisma sp.
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Hyperoblastus reimanni |
Silica formation |
David Thompson |
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Submitted on 2010-11-26 by David Thompson
Location (approximate): Milan, Washtenaw, MI
Strat unit: Silica formation
Submitter notes: This crushed(see next photo entry for crushed side) example is to show what a blastoid in this condition might look like. It is 11.5 mm high by 9.8 mm wide at the widest. This was collected in 1991 from the Martin-Marietta spoil piles in Milan, MI where blastoids are far more rare then, for example, at Paulding, OH.
Photo title: Crushed and Incomplete Example of Hyperoblastus reimani from Milan, MI
Taxa present: Hyperoblastus reimanni
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Hyperoblastus reimanni |
Silica formation |
David Thompson |
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Submitted on 2010-11-26 by David Thompson
Location (approximate): Milan, Washtenaw, MI
Strat unit: Silica formation
Submitter notes: This crushed example is to show what a blastoid in this condition might look like. It is 11.5 mm high by 9.8 mm wide at the widest. This was collected in 1991 from the Martin-Marietta spoil piles in Milan, MI where blastoids are far more rare then, for example, at Paulding, OH.
Photo title: Crushed and Incomplete Example of Hyperoblastus reimani from Milan, MI View 2
Taxa present: Hyperoblastus reimanni
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Eleutherocrinus cassedayi |
Hungry Hollow formation |
David Thompson |
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Submitted on 2010-11-26 by David Thompson
Location (approximate): Thedford, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes: This is a not too good example of this rare and unusual blastoid. Eleutherocrinus cassedayi from the Hungry Hollow formation at the 'tileyard' at Thedford, Ontario, Canada. The blastoid is 17 mm long and 9 mm wide.Better examples are shown on this website but these are so rare that all examples should be looked at and any partial collected.It is believed that these blastoids were not attached as adults and able to move independently.
Photo title: Eleutherocrinus cassedayi
Taxa present: Eleutherocrinus cassedayi
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Eleutherocrinus cassedayi |
Hungry Hollow formation |
David Thompson |
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Submitted on 2010-11-26 by David Thompson
Location (approximate): Thedford, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes: This is a not too good example of this rare and unusual blastoid. Eleutherocrinus cassedayi from the Hungry Hollow formation at the 'tileyard' at Thedford, Ontario, Canada. The blastoid is 17 mm long and 9 mm wide.Better examples are shown on this website but these are so rare that all examples should be looked at and any partial collected.It is believed that these blastoids were not attached as adults and able to move independently.
Photo title: Eleutherocrinus cassedayi view 2
Taxa present: Eleutherocrinus cassedayi
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Devonoblastus whiteavesi |
Hungry Hollow formation |
David Thompson |
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Submitted on 2010-11-27 by David Thompson
Location (approximate): Arkona, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes: A small and rare blastoid from the Hungry Hollow formation of Arkona, Ontario, Canada. This is crushed on one side(see next photo entry) and is 10 mm high by 5.74 mm wide. Identified by Alex Fabian.
Photo title: Devonoblastus whiteavesi
Taxa present: Devonoblastus whiteavesi
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Devonoblastus whiteavesi |
Hungry Hollow formation |
David Thompson |
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Submitted on 2010-11-27 by David Thompson
Location (approximate): Arkona, Lambton, ON
Strat unit: Hungry Hollow formation
Submitter notes: A small and rare blastoid from the Hungry Hollow formation of Arkona, Ontario, Canada. A view showing the crushed side of the previous photo entry. It is 10 mm high by 5.74 mm wide. Identified by Alex Fabian.
Photo title: Devonoblastus whiteavesi view 2
Taxa present: Devonoblastus whiteavesi
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Conularia ? |
Silica formation |
Scott Vergiels |
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Submitted on 2010-11-27 by Scott Vergiels
Location (approximate): , Lucas, OH
Strat unit: Silica formation
Submitter notes: A nice specimen measuring 95mm X 50mm.
Photo title: CONULARID
Taxa present: Conularia ?
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