Submitted on 2009-01-06 by ummp invertebrate paleontology

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: This specimen is a paratype. It is 7 cm tall.

Photo title: Coral

Taxa present: Cystiphylloides americanum bellense

UMMP specimen number: paratype 35171

View full record

Submitted on 2009-06-03 by David Thompson

Location (approximate): , Presque Isle, MI

Strat unit: Bell formation

Submitter notes: Small complete crinoid Calyx from the Bell Shale at Rockport Quarry. The ornamented calyx is 3/4' or 20 mm by 3/4' or 20 mm but is a bit flattened.

Photo title: Gennaeocrinus variabilis

Taxa present: Gennaeocrinus variabilis

View full record

Submitted on 2009-06-03 by David Thompson

Location (approximate): , Presque Isle, MI

Strat unit: Bell formation

Submitter notes: The base of the Gennaeocrinus showing the stem attachment and the characteristic 'flange' around the stem.

Photo title: Gennaeocrinus variabilis

Taxa present: Gennaeocrinus variabilis

View full record

Submitted on 2009-08-25 by ummp invertebrate paleontology

Location (approximate): , Alpena, MI

Strat unit: Bell formation

Submitter notes: This specimen is 1.6 cm tall.

Photo title: Blastoid

Taxa present: Nucleocrinus meloniformis

View full record

Submitted on 2009-11-09 by ummp invertebrate paleontology

Location (approximate): Rockport, Alpena, MI

Strat unit: Bell formation

Submitter notes: The specimen is 1.5 cm across.

Photo title: Crinoid

Taxa present: Gilbertsocrinus alpenensis

View full record

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: A side view of a very ornate species measuring 7mm wide and 5.5mm tall.

Photo title: CRINOID CALYX

Taxa present: Gennaeocrinus goldringae

View full record

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: Opposite side view of a very ornate species measuring 7mm wide and 5.5mm tall.

Photo title: CRINOID CALYX

Taxa present: Gennaeocrinus goldringae

View full record

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: A tegmen view of a very ornate species measuring 7mm wide and 5.5mm tall.

Photo title: CRINOID CALYX

Taxa present: Gennaeocrinus goldringae

View full record

Submitted on 2009-11-19 by David Clark

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: A rare crinoid measuring 10mm long.

Photo title: CRINOID STEM AND PARTIAL CALYX

Taxa present: Melocrinites sp.

View full record

Submitted on 2009-11-20 by Scott Vergiels

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: An oral view of the central disk with very little of the arms. This may be a new brittlestar from the formation. The disk measures 9mm in diameter.

Photo title: UNDESCRIBED OPHIUROID

Taxa present: Undescribed sp.

View full record

Submitted on 2009-11-20 by Scott Vergiels

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: An aboral view of the central disk with very little of the arms. This may be a new brittlestar from the formation. The disk measures 9mm in diameter.

Photo title: UNDESCRIBED OPHIUROID

Taxa present: Undescribed sp.

View full record

Submitted on 2010-04-10 by David Thompson

Location (approximate): Rockport, Alpena, MI

Strat unit: Bell formation

Submitter notes: This crinoid measures 22mm X 29mm.

Photo title: CRINOID CALYX

Taxa present: Synbathocrinus sp.

View full record

Submitted on 2012-07-04 by David Thompson

Location (approximate): Rockport, Alpena, MI

Strat unit: Bell formation

Submitter notes: This species, Gennaeocrinus variables, which is very tiny, 1.176 cm (0.69 inches), can still be host to a snail as a rare parasite(?). The gastropod is too tiny for good species identification and is covered with bryozoan. Alex Fabian was generous to give me these from the Tom Witherspoon, Sr. collection knowing my interest in these Crinoid/snail association

Photo title: Tiny crinoid with gastropod attached to tegmen

Taxa present: Gennaeocrinus variabilis, Platyceras

View full record

Submitted on 2012-07-04 by David Thompson

Location (approximate): Rockport, Alpena, MI

Strat unit: Bell formation

Submitter notes: This crinoid is 1.03 cm, (.40 inches) wide by .84 cm ( .33 inches) high. The snail is .91 (35 inches) long. The crinoid is the size of a large pea! These are from the Bell Shale at Rockport, Mi North of Alpena.

Photo title: A different example of tiny crinoid and snail.

Taxa present: Gennaeocrinus variabilis, Platyceras

View full record

Submitted on 2012-07-04 by David Thompson

Location (approximate): Rockport, Alpena, MI

Strat unit: Bell formation

Submitter notes: These additional three Genneaocrinus all have partial snails attached to their tegmens. Due to the partial status these are put together rather then showcased individually. All these were from the same source in the Bell shale

Photo title: A set of three Small crinoid calyxes with fragments of snail attachments

Taxa present: Gennaeocrinus variabilis, Platyceras

View full record

Submitted on 2013-01-20 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: These three crinoid caylxes were found in year 2012 and all were found within a 2 foot space of ground. One can go years not seeing these then a special find of all three at once! These Gennaeocrinus variables are all complete, the smallest on the left is .3' or .77 cm, the largest in the middle is .4' or 1.1 cm tall by .4 or 1.0 cm wide. These were all in pristine condition and required no cleaning.

Photo title: Three tiny crinoid calyxes

Taxa present: Gennaeocrinus variabilis

View full record

Submitted on 2014-05-26 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: The Bell shale is quite sparse and finding this crinoid with Platyceras attached was rare & unusual. The tegmen has been scraped open to reveal the attachment of the snail to the crinoid.

Photo title: Crinoid with Snail.

Taxa present: Gilbertsocrinus alpenensis

View full record

Submitted on 2014-05-26 by David Thompson

Location (approximate): Alpena, Alpena, MI

Strat unit: Bell formation

Submitter notes: This is the base view of the crinoid with snail. The Platyceras is visible at lower left. There is even a small bryozoan on the Platyceras. The base, including the snail, is 20mm wide by 16 mm tall by 12 mm. deep. Collected 5-23-14

Photo title: base of crinoid

Taxa present: Gilbertsocrinus alpenensis

View full record

Submitted on 2015-11-14 by Joseph Koniecki

Location (approximate): Rockport, Alpena, MI

Strat unit: Bell formation

Submitter notes: This crinoids comes in at the very tiny number of 1 cm which includes the stem.

Photo title: Crinoid crown with stem

Taxa present: Charientocrinus bellitubatus

View full record

Submitted on 2021-02-19 by Mary Ann Szwabowski

Location (approximate): Rockport, Alpena, MI

Strat unit: Bell formation

Submitter notes: None

Photo title: Rostroconch

Taxa present: Bigalea

View full record