Currently showing records 61 - 80 of 1730 total

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Logocrinus brandoni Silica formation Michael Lask

Submitted on 2014-11-18 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 35 mm from the top of the arms to the bottom of the calyx with about 29 mm of stem. Collected and prepared by Patricia Rutkowski.

Photo title: Crinoid

Taxa present: Logocrinus brandoni

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Eldredgeops crassituberculata Silica formation Michael Lask

Submitted on 2014-11-18 by Michael Lask

Location (approximate): Berkey, Lucas, OH

Strat unit: Silica formation

Submitter notes: 46 mm long. Collected and prepared by Patricia Rutkowski.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Arthroacantha carpenteri Silica formation David Clark

Submitted on 2014-10-11 by David Clark

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Crinoid showing regeneration of damaged arms.

Photo title: Devonian crinoid

Taxa present: Arthroacantha carpenteri

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Gilbertsocrinus ohioensis Silica formation David Clark

Submitted on 2014-10-11 by David Clark

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A beautiful crinoid prepared with the spines free standing.

Photo title: Devonian crinoid

Taxa present: Gilbertsocrinus ohioensis

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Tornoceras , unidentified cephalopod , Arthroacantha carpentari, Rhipidomella penelope Arkona formation Ken Dobson

Submitted on 2014-10-08 by Ken Dobson

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This collection of small pyritized fossils includes a brachiopod, a crinoid calyx, and two cephalopods, one straight and the other coiled. All but the brachiopod are from Arkona, Ontario. The Brach is from Milan, Michigan.

Photo title: A collection of small pyritized fossils from the Ken Dobson collection

Taxa present: Tornoceras , unidentified cephalopod , Arthroacantha carpentari, Rhipidomella penelope

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Eldredgeops milleri Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This was collected and prepared by Dan Edmondson during the Summer of 2012. The specimen is 39 mm across the cephalon.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Greenops widderensis Widder formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: Picture 2 is a close-up of the Trilobite.

Photo title: Trilobite

Taxa present: Greenops widderensis

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Eldredgeops crassituberculata Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Pygidium view: This is the first whole Trilobite I ever found. I was hunting with my daughter Zoe in the old North Quarry on June 23, 2007. This is the only one we found that day with a head. It might also be the last roller that Richard Heimlich ever prepared. The specimen measures 23.7mm x 14.8mm.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Eldredgeops crassituberculata Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Cephalon view: This is the first whole Trilobite I ever found. I was hunting with my daughter Zoe in the old North Quarry on June 23, 2007. This is the only one we found that day with a head. It might also be the last roller that Richard Heimlich ever prepared. The specimen measures 23.7mm x 14.8mm.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Eldredgeops crassituberculata Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: An unprepared specimen in matrix. Collected in 2008. The slab measures 182mm x 140mm. The trilobite is 24mm X 26mm wide.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Eldredgeops crassituberculata Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Side view: This is the first whole Trilobite I ever found. I was hunting with my daughter Zoe in the old North Quarry on June 23, 2007. This is the only one we found that day with a head. It might also be the last roller that Richard Heimlich ever prepared. The specimen measures 23.7mm x 14.8mm.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Greenops widderensis Widder formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: The Trilobite is 32 mm long. The Brachiopods are Muscrospirifer thedfordensis. Collected and prepared by Dan Edmondson. Picture 1 is of the entire plate

Photo title: Trilobite

Taxa present: Greenops widderensis

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Arthroacantha carpenteri Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 102 mm from top of the arms to the bottom of the calyx. Collected and prepared by Patricia Rutkowski.

Photo title: Crinoid

Taxa present: Arthroacantha carpenteri

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Eldredgeops crassituberculata Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: I found these on April 14, 2012. They are both about 35 mm across the cephalon. The top picture is what they looked like fresh from the quarry. Below is after being prepared by David Clark.

Photo title: Trilobite

Taxa present: Eldredgeops crassituberculata

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Callixylon newberryi Alpena formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: Collected by Patricia Rutkowski from the Antrim Shale of the Paxton Quarry, the specimen is 303 mm long. Callixylon Newberryi is a primitive conifer that dates back to the late Devonian Period, which is considered the time period when trees first evolved. The Callixylon is a member of the extinct order of tree like plants named Archaeopteridales. These plants with fern like leaves are estimated to be 350 to 375 Million years old making them among the worlds oldest trees. These tree like plants had leaves similar to ferns. For many years scientists classified Archaeopteris as a separate genus than Callixylonin under the order of Archaeopteridales. In the 1960s, paleontologists were able to demonstrate that the fossil wood known as Callixylon and the petrified fern leaf imprints known as Archaeopteris were actually part of the same plant. This plant no matter what it is called has turned out to be the link between trees and ferns.

Photo title: Plant

Taxa present: Callixylon newberryi

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Callixylon newberryi Alpena formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Alpena, Alpena, MI

Strat unit: Alpena formation

Submitter notes: About 240 mm across, this roughly 15 pound tree stump was collected b Patricia Rutkowski from the Antrim Shale of the Paxton Quarry. Callixylon Newberryi is a primitive conifer that dates back to the late Devonian Period, which is considered the time period when trees first evolved. The Callixylon is a member of the extinct order of tree like plants named Archaeopteridales. These plants with fern like leaves are estimated to be 350 to 375 Million years old making them among the worlds oldest trees. These tree like plants had leaves similar to ferns. For many years scientists classified Archaeopteris as a separate genus than Callixylonin under the order of Archaeopteridales. In the 1960s, paleontologists were able to demonstrate that the fossil wood known as Callixylon and the petrified fern leaf imprints known as Archaeopteris were actually part of the same plant. This plant no matter what it is called has turned out to be the link between trees and ferns.

Photo title: Plant

Taxa present: Callixylon newberryi

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Gilbertsocrinus ohioensis Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 18 mm from the top of the arms to the bottom of the calyx. Collected and prepared by Patricia Rutkowski.

Photo title: Crinoid

Taxa present: Gilbertsocrinus ohioensis

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Mucrospirifer sp Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: About 33 mm across

Photo title: Brachiopod

Taxa present: Mucrospirifer sp

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Eldredgeops milleri Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This is a plaster cast of an amazing specimen collected by Jeff Aubry in the late 1970's. It was prepared by Scott Vergiels. This is one of 200 casts made directly from the original by the late Gene Thomas (who was also a great fossil collector and preparer as well). The detail is unusually good for a replica. These were large E. Milleri. The largest is 70 mm. They average about 55 mm. The plate is 310 mm x 230 mm.

Photo title: Trilobite

Taxa present: Eldredgeops milleri

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Rhinocaris ehlersi Silica formation Michael Lask

Submitted on 2014-10-04 by Michael Lask

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 89 mm long Collected and prepared by Patricia Rutkowski.

Photo title: Phyllocarid

Taxa present: Rhinocaris ehlersi

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