Submitted on 2007-02-14 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Specimen is 150mm in diameter. The most complete of three known specimens. This species has 28 arms. Note the large madreporite at the 11 o'clock position just outside of the mouth-angle plates.

Photo title: Multi-Armed Starfish

Taxa present: Arkonaster topororum

View full record

Submitted on 2007-02-14 by John Topor

Location (approximate): Thedford, Lambton, ON

Strat unit: Widder formation

Submitter notes: Trilobite is 30mm long. Brachiopods are uncleaned. Cephalons and pygidia are common in the formation.

Photo title: Trilobite with Brachiopods on Matrix

Taxa present: Greenops widderensis, Mucrospirifer thedfordensis, Devonochonetes sp.

View full record

Submitted on 2007-02-14 by John Topor

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Two specimens, the larger being 27mm and the smaller one 15mm. Complete prone specimens of this trilobite are extremely rare in the formation.

Photo title: Trilobite Duo

Taxa present: Crassiproetus crassimarginatus

View full record

Submitted on 2007-02-13 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: This is the top view of an Arthroacantha carpenteri crinoid calyx showing the anal pyramid with a very pronounced borehole. Again U.S. 10 cent pc. for scale.

Photo title:

Taxa present: Arthroacantha carpenteri

View full record

Submitted on 2007-02-12 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: This is how the speciman was found & collected with a nice Nucleocrinus blastoid with several 'horn' corals and a head for a Phacops(?) trilobite right next to the blastoid. This was collected at Hungry Hollow but in the upper Widder beds of the formations. A U.S.of A. 10 cent pc. is for scale.

Photo title: Nucleocrinus elegans in matrix

Taxa present: Heliophyllum , Nucleocrinus elegans, Phacops

View full record

Submitted on 2007-02-12 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Norway Point formation

Submitter notes: This old Brachiopod was encrusted with several types of creatures living on her & they died with her also. There were boring sponges,'Clionoides' on the growth lines of her valves & Aulocystis tabulate coral on her brachial valve. There are some small bryzoan also but these are not identifiable. This brachiopod is from the Norway Point member, also known as the 'boat launch.' Scott Vergiels assisted in this identification.

Photo title: Spinocyrtia sp. with epifauna.

Taxa present: Spinocyrtia sp., Aulocystis commensalis

View full record

Submitted on 2007-02-12 by David Thompson

Location (approximate): Arkona, Lambton, ON

Strat unit: Widder formation

Submitter notes: This is another view in more detail of the Nucleocrinus blastoid from the Widder beds of Hungry Hollow. This shows the Phacops head to better advantage and the Heliophyllum coral behind them. The actual size of the blastoid is 1 cm. long exactly.

Photo title:

Taxa present: Heliophyllum halli, Phacops , Nucleocrinus elegans

View full record

Submitted on 2007-02-12 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Traverse formation

Submitter notes: This is an unusual species with a Platyceras attached. Not too many Dolatocrinus with the snail attached. More often scars are found. This was found in the Alpena Limestone near a bioherm in Alpena. A dime is used for scale.

Photo title: Crinoid with snail

Taxa present: Dolatocrinus asterias, Platyceras bucculentum

View full record

Submitted on 2007-02-12 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Traverse formation

Submitter notes: This view is of the top view of the crinoid showing the position of the Platyceras in relation to the anal opening & arms. This is from the Alpena Limestone but is from a bioherm in the formation where more crinoids are found. a dime is for scale.

Photo title:

Taxa present: Dolatocrinus asterias, Platyceras bucculentum

View full record

Submitted on 2007-02-11 by Tomasz Baumiller

Location (approximate): Thedford, Lambton, ON

Strat unit: Arkona formation

Submitter notes:

Photo title:

Taxa present: Arthroacantha carpenteri, Platyceras

View full record

Submitted on 2007-02-05 by John Topor

Location (approximate): Sylvania, Lucas, OH

Strat unit: Silica formation

Submitter notes: From Unit 9 of the Silica Fm. Specimen measures 120mm tall by 135mm wide at the arms (stem not included). Collected by Evan Topor

Photo title: Gilbertsocrinus Crown

Taxa present: Gilbertsocrinus ohioensis

View full record

Submitted on 2007-02-05 by David Thompson

Location (approximate): Paulding, Paulding, OH

Strat unit: Silica formation

Submitter notes: This view of this trilobite shows the outside shell & eyes & is the second picture

Photo title:

Taxa present: Phacops (Eldredgeops) rana crassituberculata

View full record

Submitted on 2007-02-04 by Joseph Koniecki

Location (approximate): Thedford, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: This pieces is over a foot across. It has been donated the UMMP and is available for research purposes. With care, the strom can be lifted off the matrix to examine the back side.

Photo title:

Taxa present: Stromatoporoid

View full record

Submitted on 2007-02-04 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Preparation of this specimen was conducted by carefully removing pieces from the matrix and immediately gluing them back together. Once the entire specimen was removed a map was made of its original orientation. The specimen was then placed in a quaternary ammonium solution for cleaning. The solution caused the glue points to dissolve. Then the clean pieces were assembled using the map. The final orientation represents the specimen as it occurred in the matrix and not necessarily in its living position, which may or may not have been the same. The specimen is about 14 cm across at its widest point

Photo title:

Taxa present: Cladopora sp.

View full record

Submitted on 2007-02-04 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Preparation of this specimen was conducted by carefully removing pieces from the matrix and immediately gluing them back together. Once the entire specimen was removed a map was made of its original orientation. The specimen was then placed in a quaternary ammonium solution for cleaning. The solution caused the glue points to dissolve. Then the clean pieces were assembled using the map. The final orientation represents the specimen as it occurred in the matrix and not necessarily in its living position, which may or may not have been the same. The specimen is about 11 cm across at its widest point. Portions are encrusted with the bryozoan Hederalla sp.

Photo title:

Taxa present: Trachypora elegantula, Hederella sp.

View full record

Submitted on 2007-02-04 by David Thompson

Location (approximate): , Paulding, OH

Strat unit: Silica formation

Submitter notes: This third view of this Phacops continues to show the hypostome (mouth cover) and shows the 'pits' along the lip of this taxon. The exact purpose of these has been debated as locking points for the pygidium when the bug is enrolled or it may be something completely unrelated. Post your ideas!

Photo title:

Taxa present: Phacops (Eldredgeops) rana crassituberculata

View full record

Submitted on 2007-02-03 by Shanan Peters

Location (approximate): Alpena, Alpena, MI

Strat unit: Genshaw formation

Submitter notes: I'm not sure what species this is without sectioning, but I'm pretty sure it is a cool Favosites colony.

Photo title: Favositid coral

Taxa present: Favosites sp.

View full record

Submitted on 2007-02-03 by John Topor

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Specimen is approximately 30mm in diameter

Photo title: Devonaster Starfish

Taxa present: Devonaster triradiatus

View full record

Submitted on 2007-02-03 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Arkona formation

Submitter notes: Lower spine is 4 cm.

Photo title: Gastropod with spines

Taxa present: Spiniplatyceras arkonensis

View full record

Submitted on 2007-02-03 by Joseph Koniecki

Location (approximate): Arkona, Lambton, ON

Strat unit: Hungry Hollow formation

Submitter notes: Coral is 9 cm wide across the top.

Photo title:

Taxa present: Favosites turbinatus

View full record