Currently showing records 961 - 980 of 1554 total

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Arthroacantha carpenteri, Undescribed sp. Silica formation Pat Rutkowski

Submitted on 2009-11-19 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: An amazing slab of 7 complete and partial crowns. 4 mature undescribed ophiuroids and 40+ immature brittlestars also litter the surface of this wonderful death plate.The overall size of this slab is 13.5 X 15.5 inches and 2.25 inches thick. Collected many years ago.

Photo title: CRINOIDS AND BRITTLESTARS

Taxa present: Arthroacantha carpenteri, Undescribed sp.

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Undescribed sp., Arthroacantha carpenteri Silica formation Pat Rutkowski

Submitted on 2009-11-19 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A closer view of the amazing slab of 7 complete and partial crowns. 4 mature undescribed ophiuroids and 40+ immature brittlestars also litter the surface of this wonderful death plate. The overall size of this slab is 13.5 X 15.5 inches and 2.25 inches thick. Collected many years ago. Note the 2 mature ophiuroids just above center in the photo and 2 more nestled together in the upper left. Many immature specimens can be seen scattered about.

Photo title: CRINOIDS AND BRITTLESTARS

Taxa present: Undescribed sp., Arthroacantha carpenteri

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Undescribed sp., Arthroacantha carpenteri Silica formation Pat Rutkowski

Submitted on 2009-11-19 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A close-up view of a partial brittlestar from previous post. This mature individual measures 20mm X 12mm. Note the immature specimens nearby.

Photo title: UNDESCRIBED OPHIUROID

Taxa present: Undescribed sp., Arthroacantha carpenteri

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Undescribed sp., Arthroacantha carpenteri Silica formation Pat Rutkowski

Submitted on 2009-11-19 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A close-up view of a partial brittlestar from the crinoid/brittlestar death slab. This mature individual measures 40mm X 31mm. Note the immature specimens nearby.

Photo title: UNDESCRIBED OPHIUROID

Taxa present: Undescribed sp., Arthroacantha carpenteri

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Undescribed sp., Arthroacantha carpenteri Silica formation Pat Rutkowski

Submitted on 2009-11-19 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A close-up view of 2 brittlestars from the crinoid/brittlestar death plate nestled together. These mature specimens measure 32mm X 25mm and 13mm X 11mm. Note the immature specimens nearby.

Photo title: UNDESCRIBED OPHIUROIDS

Taxa present: Undescribed sp., Arthroacantha carpenteri

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Undescribed sp. Silica formation Pat Rutkowski

Submitted on 2009-11-19 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A close-up view taken under a stereo zoom microscope of one of the individual immature specimens from the crinoid/brittlestar death plate. The average size of these babies ranges from 4.8mm to 6.4mm in diameter.

Photo title: UNDESCRIBED IMMATURE OPHIUROID

Taxa present: Undescribed sp.

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Undescribed sp. Silica formation Pat Rutkowski

Submitted on 2009-11-19 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A close-up view taken under a stereo zoom microscope of another of the individual immature specimens from the crinoid/brittlestar death plate. The average size of these babies ranges from 4.8mm to 6.4mm in diameter.

Photo title: UNDESCRIBED IMMATURE OPHIUROID

Taxa present: Undescribed sp.

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Undescribed sp. Silica formation Pat Rutkowski

Submitted on 2009-11-19 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A close-up view taken under a stereo zoom microscope of another of the individual immature specimens from the crinoid/brittlestar death plate. The average size of these babies ranges from 4.8mm to 6.4mm in diameter.

Photo title: UNDESCRIBED IMMATURE OPHIUROID

Taxa present: Undescribed sp.

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Unknown sp. Genshaw formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Genshaw formation

Submitter notes: A rare Devonian lungfish tooth. One of three known specimens. Approximately 12mm long

Photo title: LUNGFISH TOOTH PLATE

Taxa present: Unknown sp.

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Unknown sp. Genshaw formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Genshaw formation

Submitter notes: An unidentified fish tooth measuring 12mm wide.

Photo title: FISH TOOTH

Taxa present: Unknown sp.

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Gennaeocrinus goldringae Bell formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: A side view of a very ornate species measuring 7mm wide and 5.5mm tall.

Photo title: CRINOID CALYX

Taxa present: Gennaeocrinus goldringae

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Gennaeocrinus goldringae Bell formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: Opposite side view of a very ornate species measuring 7mm wide and 5.5mm tall.

Photo title: CRINOID CALYX

Taxa present: Gennaeocrinus goldringae

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Gennaeocrinus goldringae Bell formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: A tegmen view of a very ornate species measuring 7mm wide and 5.5mm tall.

Photo title: CRINOID CALYX

Taxa present: Gennaeocrinus goldringae

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Favosites sp. Hungry Hollow formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A very small coral colony measuring 9mm X 4mm.

Photo title: COLONY CORAL

Taxa present: Favosites sp.

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Favosites sp. Hungry Hollow formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: A vnunderside view of the very small coral colony measuring 9mm X 4mm.

Photo title: COLONY CORAL

Taxa present: Favosites sp.

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Melocrinites sp. Bell formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: A rare crinoid measuring 10mm long.

Photo title: CRINOID STEM AND PARTIAL CALYX

Taxa present: Melocrinites sp.

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Gilbertsocrinus spinigerus Hungry Hollow formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Surface collected in the Hungry Hollow mb. This crushed specimen may have an unusual 4th row of spines on the calyx. It mesures 15mm wide.

Photo title: CRINOID CALYX

Taxa present: Gilbertsocrinus spinigerus

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Tornoceras (T.) arkonensis Arkona formation David Clark

Submitted on 2009-11-19 by David Clark

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: A common pyritized ammonite from the Arkona Formation. It measures 7.5mm in diameter.

Photo title: Ammonite

Taxa present: Tornoceras (T.) arkonensis

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Synbathocrinus matutinus Thunder Bay formation Stan Hyne

Submitted on 2009-11-19 by Stan Hyne

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: A very nice calyx measuring 9.2mm tall.

Photo title: CRINOID CALYX

Taxa present: Synbathocrinus matutinus

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Gennaeocrinus sp. Thunder Bay formation Stan Hyne

Submitted on 2009-11-19 by Stan Hyne

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: A side view of a nice calyx measuring 15mm in diameter and 13mm high. The tegmen plates are missing.

Photo title: CRINOID CALYX

Taxa present: Gennaeocrinus sp.

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