Submitted on 2019-07-21 by Nick Katsarelas

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: This is the largest (partial) trilobite I ever found. It's approximately 4 cm across the cephalon. It was beautifully prepped by Joseph Koniecki.

Photo title:

Taxa present: Eldredgeops rana crassituberculata

View full record

Submitted on 2019-07-02 by Mike Palescuk

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Almost a hundred in a one foot square crumbly portion of Unit 13.

Photo title: Mucrospirifer prolificus

Taxa present: Mucrospirifer prolificus

View full record

Submitted on 2019-07-02 by Mike Palescuk

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: Unit 9 bug solidly supported by a huge polished pyrite nodule. Now in the Cranbrook collection.

Photo title: Pyrite nodule supporting prone Eldredgeops

Taxa present: Eldredgeops milleri

View full record

Submitted on 2019-07-02 by Mike Palescuk

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: Acquired from Tom Johnson, and photographed in Fossils Quarterly magazine.

Photo title: Triple Greenops

Taxa present: Greenops widderensis

View full record

Submitted on 2019-07-02 by Mike Palescuk

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: In-situ and it stayed right there. 22 inches across and weighed in at what must’a been 100 lbs. Shoe for scale.

Photo title: Giant “Rose Coral”

Taxa present: Favosites billingsi

View full record

Submitted on 2019-07-02 by Mike Palescuk

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: 1/4” to 5/16” in size

Photo title: One Hyperoblastus and two Nucleocrinus

Taxa present: Nucleocrinus and Hyperoblastus

View full record

Submitted on 2019-07-02 by Mike Palescuk

Location (approximate): Marshall, Calhoun, MI

Strat unit: Marshall formation

Submitter notes: From construction site in city of Marshall. Size about 3/4”.

Photo title: Bellerophon gastropod in Marshall Sandstone

Taxa present: Bellerophon sp.

View full record

Submitted on 2019-05-12 by David Thompson

Location (approximate): Antwerp, Paulding, OH

Strat unit: Dundee formation

Submitter notes: injured Rostroconch that healed and grew.

Photo title: Deformed Rostroconch

Taxa present: Conocardium coneus

View full record

Submitted on 2019-05-12 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: showing attachment area.

Photo title: stem end of previous Blasted photo

Taxa present: Placoblastus obovastus

View full record

Submitted on 2019-05-12 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: None

Photo title: Detail of previous specimen showing ambulacra.

Taxa present: Placoblastus obovastus

View full record

Submitted on 2019-05-12 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: attached to matrix

Photo title:

Taxa present: Placoblastus obovastus

View full record

Submitted on 2019-05-12 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: details of Ambulacra

Photo title:

Taxa present: Placoblastus obovastus

View full record

Submitted on 2019-05-12 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Thunder Bay formation

Submitter notes: Contrast in size of blastoids from same formation.

Photo title: Small & large of same species.

Taxa present: Placoblastus obovastus

View full record

Submitted on 2018-12-25 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: The top crinoid is about 3 cm tall. Crinoids are very rare at the Paulding site compared to the Sylvania site. Very few complete crowns have been found.

Photo title: Crinoid

Taxa present: Proctothylacocrinus sp.

View full record

Submitted on 2018-12-15 by Joseph Koniecki

Location (approximate): Milan, Washtenaw, MI

Strat unit: Silica formation

Submitter notes: Specimen is about 3 cm across. It is rare to find these inflated.

Photo title: Pelecypod

Taxa present: Mytilarca cordata

View full record

Submitted on 2018-12-15 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: The specimen is 1.5 cm across.

Photo title: Pelecypod

Taxa present: Paracyclas lirata

View full record

Submitted on 2018-12-13 by Joseph Koniecki

Location (approximate): Alpena, Alpena, MI

Strat unit: Four Mile Dam formation

Submitter notes: Identification of this specimen is based on a 1876 publication by Rominger. The coral is 10.5 cm tall.

Photo title: Coral

Taxa present: Striatopora rugosa

View full record

Submitted on 2018-07-06 by Joseph Koniecki

Location (approximate): Sylvania, Lucas, OH

Strat unit: Dundee formation

Submitter notes: 4 cm across the matrix.

Photo title: Rostroconch

Taxa present: Hippocardia sp.

View full record

Submitted on 2018-06-12 by Michael Lask

Location (approximate): Port Sanilac, Sanilac, MI

Strat unit: Amherstburg formation

Submitter notes: These little pieces of Petoskey stone were collected decades ago on the rocky shores of Lake Huron. They are exactly as found, naturally polished and aged. The larger fragment is 36 mm across. Hexagonaria was a genus of reef forming tabulate coral. Tabulate corals are extinct. Enormous reefs formed in what was Michigan during the Devonian period.

Photo title:

Taxa present: Hexagonaria percarinata

View full record

Submitted on 2018-06-09 by Joseph Koniecki

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: The crinoid is 2.5 cm tall. Another very rare crinoid.

Photo title: Crinoid

Taxa present: Melocrinus

View full record