Submitted on 2021-03-16 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: None

Photo title:

Taxa present: Mucrospirifer prolificus, Cornulites

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Submitted on 2021-02-19 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Dundee formation

Submitter notes: This complete speciman measuring 1-5/8" includes the positive and negative. This is another view of a subsequent record.

Photo title: Trilobite - Dechenella

Taxa present: Dechenella (Basidechenella) planimarginata

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Submitted on 2021-02-21 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Dundee formation

Submitter notes: This speciman has rugose solitary (horn) coral in the matrix

Photo title: Rostroconch

Taxa present: Conocardium cuneus, Heterophrentis

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Submitted on 2021-02-16 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This speciman is 5-1/2" at its widest point with association of almost 100 Spirorbis (coiled) worms and bryozoan

Photo title: Nautiloid Cephalopod

Taxa present: Hederella filiformus, Heracloceras ineligans, Spirorbis

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Submitted on 2021-02-16 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This speciman measures 2-1/4" and exhibits a calcite vug, sponge boring holes, and Cornulites worm tubes and furrows

Photo title: Pyritized Brachiopod with Calcite Crystal

Taxa present: Cornulites , Paraspirifer bownockeri

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Submitted on 2021-03-29 by Mary Ann Szwabowski

Location (approximate): Napoleon, Jackson, MI

Strat unit: Marshall formation

Submitter notes: This speciman is from the lower Marshall Formation.

Photo title: Nautiloid Cephalopod

Taxa present: Mooreceras

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Submitted on 2021-02-16 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Speciman measures 2-1/2" with original shell intact.

Photo title: Pelecypod

Taxa present: Ptychopteria flabellum

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Submitted on 2021-02-19 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Dundee formation

Submitter notes: This complete speciman measuring 1-5/8" includes the positive and negative. This is another view of a prior record.

Photo title: Trilobite - Dechenella

Taxa present: Dechenella (Basidechenella) planimarginata

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Submitted on 2021-02-18 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Anderdon formation

Submitter notes: None

Photo title: Rostroconch

Taxa present: Conocardium cuneus

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Submitted on 2021-02-19 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: None

Photo title: Gastropod

Taxa present: Spinyplatyceras arkonense

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Submitted on 2021-03-29 by Mary Ann Szwabowski

Location (approximate): Napoleon, Jackson, MI

Strat unit: Marshall formation

Submitter notes: This speciman is from the lower Marshall Formation and measures almost 4"

Photo title: Nautiloid Cephalopod

Taxa present: Mooreoceras

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Submitted on 2021-02-17 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: The speciman has pyrite flakes on the surface

Photo title: Gastropod with Pyrite

Taxa present: Platyceras

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Submitted on 2024-01-12 by Mary Ann Szwabowski

Location (approximate): Napoleon, Jackson, MI

Strat unit: Marshall formation

Submitter notes: This specimen from the lower Marshall Formation is a crusher tooth belonging to the Chondrichthyans class of fish and measures 12.7mm long

Photo title: Shark Tooth

Taxa present: Deltodus

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Submitted on 2021-02-19 by Mary Ann Szwabowski

Location (approximate): Napoleon, Jackson, MI

Strat unit: Marshall formation

Submitter notes: This specimen from the lower Marshall Formation measures 2-1/2" long

Photo title: Shark Spine

Taxa present: Hybodontiformes

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Submitted on 2021-02-19 by Mary Ann Szwabowski

Location (approximate): Napoleon, Jackson, MI

Strat unit: Marshall formation

Submitter notes: This speciman is from the lower Marshall Formation

Photo title: Nautiloid Cephalopod

Taxa present: Cycloceras

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Submitted on 2021-02-16 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This speciman is encrusted with Botryllopora socialis

Photo title: Brachiopod with Bryozoan

Taxa present: Strophodonta , Botryllopora socialis

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Submitted on 2021-02-16 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Mature pyritized brachiopod encrusted with bryozoan

Photo title: Brachiopod with Bryozoan

Taxa present: Paraspirifer bownockeri, Fistulipora

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Submitted on 2021-02-19 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This gastropod is encrusted with two different bryozoan

Photo title: Gastropod with Bryozoan

Taxa present: Platyceras bucculentum, Fistulipora , Hederella filiformus

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Submitted on 2021-02-16 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This gastropod is encrusted with bryozoan

Photo title: Gastropod with Bryozoan

Taxa present: Atactotoechus typicus, Platyceras bucculentum

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Submitted on 2024-09-07 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: This solitary coral is encrusted with bryozoan

Photo title: Solitary Coral

Taxa present: Fistulipora , Heliophyllum halli

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