Currently showing records 21 - 40 of 1735 total

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Tornoceras uniangulare Squaw Bay formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Squaw Bay formation

Submitter notes: 43 mm across. Collected by Patricia Rutkowski. Prepared by Scott Vergiels.

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Taxa present: Tornoceras uniangulare

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Hippocardia cunea Ohio formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Ohio formation

Submitter notes: Dundee Limestone, Sylvania, Ohio (Devonian) - 40 mm. Rostroconchs are an extinct class of molluscs.

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Taxa present: Hippocardia cunea

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Strataster devonicus Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 24 mm across. Collected and prepared by Patricia Rutkowski.

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Taxa present: Strataster devonicus

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Eldredgeops milleri Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 43 mm long. Collected and prepared by Patricia Rutkowski.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Arthroacantha carpenteri Arkona formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: The stem alone is 137 mm long. Collected and prepared by Patricia Rutkowski. This incredible specimen is on a chunk of Arkona Shale that is over 15 inches long. Pat spent countless hours preparing this classic crinoid.

Photo title: Crinoid

Taxa present: Arthroacantha carpenteri

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Koenenites cooperi Squaw Bay formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Squaw Bay formation

Submitter notes: Koenenites cooperi (the largest is 63 mm across) and Bactrite warthini (54 mm long), Squaw Bay, Alpena, Michigan (Devonian). Collected and prepared by Patricia Rutkowski.

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Taxa present: Koenenites cooperi

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Michelinoceras sp. Squaw Bay formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Squaw Bay formation

Submitter notes: 44 mm. Collected by Patricia Rutkowski.

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Taxa present: Michelinoceras sp.

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Arthroacantha carpenteri Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: The plate is 187 mm across. Collected and prepared by Patricia Rutkowski.

Photo title: Crinoid

Taxa present: Arthroacantha carpenteri

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Euryocrinus laddii Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 17 mm. Collected and prepared by Patricia Rutkowski.

Photo title: Crinoid

Taxa present: Euryocrinus laddii

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Corocrinus nodosus Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 18 mm. Collected and prepared by Patricia Rutkowski.

Photo title: Crinoid

Taxa present: Corocrinus nodosus

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Eutaxocrinus wideneri Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 26 mm. Collected by Patricia Rutkowski and prepared by Patricia Rutkowski & Joe Koniecki.

Photo title: Crinoid

Taxa present: Eutaxocrinus wideneri

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Eldredgeops crassituberculata Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: The largest one is 29 mm across the genal spines. Collected and lightly prepared by Patricia Rutkowski.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Platyceras rarispinum Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: 41 mm across. This snail would have been covered in long spines in life. Only the base of the spines are preserved in this specimen. Occasionally the spines are preserved and revealed with very careful preparation.

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Taxa present: Platyceras rarispinum

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Eldredgeops milleri Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 30 mm across the cephalon. This was collected and prepared by Dan Edmondson during the Summer of 2012.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Tentaculites bellulus Arkona formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: 70 mm across

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Taxa present: Tentaculites bellulus

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Bactrite warthini Squaw Bay formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Squaw Bay formation

Submitter notes: 44 mm. Collected and prepared by Patricia Rutkowski.

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Taxa present: Bactrite warthini

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Paneka sp. Squaw Bay formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Squaw Bay formation

Submitter notes: 56 mm. This bivalve (clam!) was collected by Patricia Rutkowski.

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Taxa present: Paneka sp.

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Lingula sp. Antrim formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Antrim formation

Submitter notes: 10 mm long

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Taxa present: Lingula sp.

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Dunkleosteus sp. Paxton formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Paxton formation

Submitter notes: Dunkleosteus sp., Antrim Shale, Traverse Group, Paxton Quarry, Alpena, Michigan (Devonian) - 326 mm long (over a foot!) This is a section of the left, lower inferognathal element (part of the lower jaw). Collected and prepared by Patricia Rutkowski. She recovered part of it in 1994 and another part in 1998.

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Taxa present: Dunkleosteus sp.

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Eldredgeops crassituberculata Silica formation Michael Lask

Submitted on 2015-12-20 by Michael Lask

Location (approximate): Antwerp, Paulding, OH

Strat unit: Silica formation

Submitter notes: 46 mm

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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