|
|
 |
Hyperoblastus bassleri |
Thunder Bay formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: Two blastoids are nearly identical in size. Both are 26mm high. The specimen on the right is 1mm wider at 15mm. That specimen also displays a sign of excellent preservation with one of it's top pointed plates still in place.
Photo title: Blastoids
Taxa present: Hyperoblastus bassleri
View full record
|
|
|
 |
Hyperoblastus bassleri |
Thunder Bay formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This blastoid theca measures 22mm high x 9mm wide.
Photo title: Blastoid
Taxa present: Hyperoblastus bassleri
View full record
|
|
|
 |
Placoblastus sp. |
Alpena formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: This blastoid theca measures 36mm high x 23mm in diameter.
Photo title: Blastoid
Taxa present: Placoblastus sp.
View full record
|
|
|
 |
Placoblastus obovatus, Megistocrinus multidecoratus |
Thunder Bay formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This great combination has a placoblastus measuring 32mm high and 22mm in diameter at it's widest. The crinoid measures 49mm in diameter and 28mm high.
Photo title: Blastoid and Crinoid Pair
Taxa present: Placoblastus obovatus, Megistocrinus multidecoratus
View full record
|
|
|
 |
Megistocrinus multidecoratus, Placoblastus obovatus |
Thunder Bay formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This great combination has a placoblastus measuring 32mm high and 22mm in diameter at it's widest. The crinoid measures 49mm in diameter and 28mm high.
Photo title: Blastoid and Crinoid Pair
Taxa present: Megistocrinus multidecoratus, Placoblastus obovatus
View full record
|
|
|
 |
Unknown sp. |
Thunder Bay formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This undescribed crinoid measures 13mm high x 19mm wide. Another view.
Photo title: Crinoid Calyx
Taxa present: Unknown sp.
View full record
|
|
|
 |
Unknown sp. |
Thunder Bay formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This undescribed crinoid measures 13mm high x 19mm wide.
Photo title: Crinoid Calyx
Taxa present: Unknown sp.
View full record
|
|
|
 |
Atractocrinus concinnus |
Arkona formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Arkona, Lambton, ON
Strat unit: Arkona formation
Submitter notes: This calyx measures 23mm high and 15mm at the widest.
Photo title: Crinoid Calyx
Taxa present: Atractocrinus concinnus
View full record
|
|
|
 |
Dolatocrinus barrisi |
Thunder Bay formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: A side view of the calyx which measures 34mm in diameter and 20mm high.
Photo title: Crinoid Calyx
Taxa present: Dolatocrinus barrisi
View full record
|
|
|
 |
Dolatocrinus barrisi |
Thunder Bay formation |
Stan Hyne |
|
Submitted on 2008-03-13 by Stan Hyne
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: A bottom view of the calyx which measures 34mm in diameter and 20mm high.
Photo title: Crinoid Calyx
Taxa present: Dolatocrinus barrisi
View full record
|
|
|
 |
Stummiana arkonensis |
Alpena formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: A very rare little trilobite from the Dock Street Clay member. It measures 20mm long x 12mm wide.
Photo title: Trilobite
Taxa present: Stummiana arkonensis
View full record
|
|
|
 |
Crassiproetus microgranulatus |
Genshaw formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Alpena, Alpena, MI
Strat unit: Genshaw formation
Submitter notes: This trilobite measures 31mm tall x 20mm wide.
Photo title: Trilobite
Taxa present: Crassiproetus microgranulatus
View full record
|
|
|
 |
Neometacanthus callites |
Alpena formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: A very unusual trilobite. This specimen measures 37mm long x 21mm wide.
Photo title: Trilobite
Taxa present: Neometacanthus callites
View full record
|
|
|
 |
Dipleura dekayi |
Thunder Bay formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This very rare enrolled trilobite would easily measure over 100mm(4 inches) if it was prone. The above photo shows the specimen from a side view. the trilobite is 55mm wide in this view.
Photo title: Trilobite
Taxa present: Dipleura dekayi
View full record
|
|
|
 |
Dipleura dekayi |
Thunder Bay formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Alpena, Alpena, MI
Strat unit: Thunder Bay formation
Submitter notes: This very rare enrolled trilobite would easily measure over 100mm(4 inches) if it was prone. The above photo shows the specimen from a top view. the trilobite is 49mm wide in this view.
Photo title: Trilobite
Taxa present: Dipleura dekayi
View full record
|
|
|
 |
Strataster devonicus |
Silica formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: This Ophuroid measures about 30mm in diameter. It rests on a slab that is 45mm x 36mm.
Photo title: Brittlestar
Taxa present: Strataster devonicus
View full record
|
|
|
 |
Agelacrinites sp. |
Alpena formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: This rare fixed starfish from the Dock Street Clay member measures 27mm in diameter. The slab is 62mm square.
Photo title: Edrioasteroid
Taxa present: Agelacrinites sp.
View full record
|
|
|
 |
Pithocrinus cooperi |
Alpena formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: This inflated crown measures 95mm long x 94mm wide. The calyx is slightly crushed.
Photo title: Crinoid Crown
Taxa present: Pithocrinus cooperi
View full record
|
|
|
 |
Pithocrinus cooperi |
Alpena formation |
Pat Rutkowski |
|
Submitted on 2008-03-12 by Pat Rutkowski
Location (approximate): Alpena, Alpena, MI
Strat unit: Alpena formation
Submitter notes: A fine example of a complete crown with 165mm of stem. The crown measures 25mm x 28mm.
Photo title: Crinoid Crown
Taxa present: Pithocrinus cooperi
View full record
|
|
|
 |
Gilbertsocrinus ohioensis |
Silica formation |
Richard Heimlich |
|
Submitted on 2008-03-12 by Richard Heimlich
Location (approximate): Sylvania, Lucas, OH
Strat unit: Silica formation
Submitter notes: This crown has its plate structure completely obscured by heavy pyritization.
Photo title: Pyritized Crinoid Crown
Taxa present: Gilbertsocrinus ohioensis
View full record
|
