Submitted on 2019-08-21 by Nick Katsarelas

Location (approximate): Alpena, Alpena, MI

Strat unit: Potter Farm formation

Submitter notes: I retrieved this specimen from a construction site on Bagley Road in 2018. The site is now a credit union. Specimen is approximately 70 mm x 90 mm.

Photo title: Spongophyllum alpenense

Taxa present: Spongophyllum alpenense

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Submitted on 2019-09-25 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: None

Photo title: Crinoid crown with stem

Taxa present: Gennaeocrinus romingeri

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Submitted on 2019-09-26 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This brachiopod pavement specimen measures 4.25" X 3.0" x 0.75". Devonochonetes is common throughout the formation as single specimens, rarer as a pavement. Redescribed by Junhui Wang in 2009.

Photo title: BRACHIOPOD PAVEMENT

Taxa present: Devonochonetes arkonensis

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Submitted on 2019-09-26 by Mike Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: This specimen measures 4.5" x 3.0". A common brachiopod in the Widder fm. Formerly know as Leiorhynchus laura. Collected by Stephan Kopacz.

Photo title: BRACHIOPOD GROUP

Taxa present: Eumetabolotoechia laura

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Submitted on 2019-09-26 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Beautiful pyritized specimen showing the oral side up on matrix measuring 8.5" X 4.5".

Photo title: STARFISH

Taxa present: Devonaster triradiatus

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Submitted on 2019-09-26 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Close-up view of the previous specimen on slab measuring 8.5" X 4.5". About 2.0" in diameter.

Photo title: STARFISH

Taxa present: Devonaster triradiatus

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Submitted on 2020-01-08 by Mike Palescuk

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Note encrusting bryozoan on the pedicle valve. Specimen measures 1.5" (37mm) long.

Photo title: Lampshell brachiopod

Taxa present: Cranaena lincklaeni

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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 2021-02-16 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 2021-02-16 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: Silica formation

Submitter notes: None

Photo title: Gastropod

Taxa present: Spinyplatyceras arkonense

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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 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 2021-02-16 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: None

Photo title: Solitary Coral

Taxa present: Heliophyllum halli, 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 brachiopod is fully encrusted with bryozoan

Photo title: Brachiopod with Bryozoan

Taxa present: Paraspirifer bownockeri, Fistulipora , Hederella filiformus

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Submitted on 2021-09-22 by Mary Ann Szwabowski

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Brachiopod encrusted with bryozoan

Photo title: Brachiopod with Bryozoan

Taxa present: Fistulipora , Mediospirifer audaculus

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