Submitted on 2008-03-12 by Pat Rutkowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This Ophuroid measures about 30mm in diameter. It rests on a slab that is 45mm x 36mm.

Photo title: Brittlestar

Taxa present: Strataster devonicus

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Submitted on 2008-03-12 by Stan Hyne

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A very large extended trilobite measuring 80mm long x 52mm wide.

Photo title: Trilobite

Taxa present: Phacops crassituberculata

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Submitted on 2008-03-12 by Stan Hyne

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: A Ventral spine plate from an unknown placoderm fish.

Photo title: Placoderm Spine

Taxa present: Unknown

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Submitted on 2008-03-15 by Farshid Keshavarz

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: A rather large and thick section of a plate from an armored fish. The shield shows the characteristic 'bumps'.

Photo title: Arthrodire Fish Plate

Taxa present: Protitanichthys rockportensis

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Submitted on 2008-03-21 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This coral is encrusting a brachiopod. The brachiopod specimen is 5.5 cm across. This specimen is a hypotype.

Photo title: Coral

Taxa present: Aulopora microbuccinata

UMMP specimen number: hypotype 53793

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a hypotype. It is 3 cm across the facing side of the brachiopod.

Photo title: Bryozoan

Taxa present: Hederella filiformis, Paraspirifer bownockeri

UMMP specimen number: hypotype 61399

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This piece has two different bryozoans. The Intrapora is the flat specimen and the Hernodia is on top of it and looks much like an Auloporid coral. The specimen is 4 cm across the photo. The specimen is a hypotype.

Photo title: Bryozoans

Taxa present: Intrapora irregularis, Hernodia humifusa

UMMP specimen number: hypotype 61143

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is a hypotype and is 5 cm across the photo.

Photo title: Bryozoan

Taxa present: Helopora inexpectata

UMMP specimen number: hypotype 61318

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Submitted on 2008-03-22 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: These specimens are hypotypes. The large specimen is 1.5 cm.

Photo title: Brachiopods

Taxa present: Athyris vittata

UMMP specimen number: hypotype 61199

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Submitted on 2008-03-29 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is 3 cm tall.

Photo title: Gastropod

Taxa present: Spiniplatyceras arkonense

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Submitted on 2008-03-29 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: The bryozoan is 6.5 cm tall.

Photo title: Bryozoan and Trilobite

Taxa present: Leptotrypella ohioensis, Phacops rana crassituberculata

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Submitted on 2008-03-29 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This trilobite is 7.7 cm which is considered quite large.

Photo title: Trilobite

Taxa present: Phacops rana crassituberculata

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Submitted on 2008-03-29 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: These two trilobites are in the position as found and on the matrix they were found in. Both can be removed for examination and placed back into their natural setting. It is 6.5 cm across the two specimens.

Photo title: Trilobites

Taxa present: Phacops rana crassituberculata

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Submitted on 2008-04-28 by ummp invertebrate paleontology

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This specimen is 6.5 cm top to bottom.

Photo title: Pelecypod

Taxa present: Limoptera macroptera

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Submitted on 2008-05-12 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This shows the opposite view of Strophodonta demissa with some small Bryozoan, Hederella concinnoides, growing on it.

Photo title: Opposite view of Brachiopod

Taxa present: Strophodonta demissa, Hederella concinnoides

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Submitted on 2008-05-13 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This series shows two species of Pelecypods from the Silica formation from several angles to show their structure but this is not too exciting to view. The Silica bivalves generally are casts or Steinkerns with little shell other then thin phosphatic layers and as such are overlooked. Here are two similar species distinguished mostly by size. The larger is nodocostata and the smaller is sylvaniensis. The smaller is 2' long by 1 1/4' wide (5 X 3 cm). The larger is 2 1/4' long by 2' wide by 1 1/2' high (5.5 X 5 x 3.5 cm).

Photo title: Silica Pelecypods

Taxa present: Grammysia sylvaniensis, Grammysia nodocostata

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Submitted on 2008-05-12 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This brachiopod, Strophodonta demissa, has an inarticulate brachiopod, Petrocrania hamiltoniae, on it and on that inarticulate there is the tabulate coral, Aulopora microbuccinata., but not on the big brachiopod (?). In addition there are two Bryozoans on the brachiopods; Atactotoechus cf. typicus (a trepostome bryozoan) covers the side opposite the Inarticulate and Hederella filiformis (cyclostome bryozoan) on the base. Also Hederella concinnoides on the reverse and also on the inarticulate.

Photo title: A Brachiopod, Strophodonta demissa, with lots of epifauna!

Taxa present: Strophodonta demissa, Petrocrania hamiltoniae, Aulopora microbuccinata, Atactotoechus typicus, Hederella filiformis, Hederella concinnoides

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Submitted on 2008-05-12 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes:

Photo title: Another view of same Brachiopod with epifauna

Taxa present: Strophodonta demissa

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Submitted on 2008-05-12 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This view shows the Bryozoans, Atactotoechus cf. typicus and the Hederella filiformis (cyclostome bryozoan)

Photo title: Third view of brachiopod

Taxa present: Atactotoechus typicus, Strophodonta demissa, Hederella filiformis

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Submitted on 2008-05-13 by David Thompson

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: Another view of the bottom of the G. sylvaniensis and the larger nodocostata,

Photo title: Silica Bivalves

Taxa present: Grammysia nodocostata, Grammysia sylvaniensis

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