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BluffCountryFossils Ordovician ID Sheet

Posted by on January 19, 2014
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BCF ID sheet

This is a jpeg image, so you should be able to right click, save as, and print it at will.

I have found that the Fossil ID sheets I have come across do not reflect what I am commonly finding here in southeast Minnesota. So, I have attempted to create one that you can take in the field and get a general idea of what you may have found. Most of the line art I found via image searches on Google. Some I just couldn’t find line art for and have created a drawing. That said, I am going to put pictures below for a better ID. Also, go to “What’s This?!” for many pictures of certain things, like cephalopods, receptaculitids, etc. I am slowly filling these in, but it does tend to be confusing for me. Trilobites are very difficult for me and that is why I refer people to Midwestpaleo.com on the sidebar as Caleb specializes in trilobites of this area.

“sp.” means species.

BCF ID Sheet B&W PDF

And you should be able to click on the above link and have it as a PDF document.

It comes out nice and big so that you can see the pictures in detail.

This ID sheet was requested by several people on the Winona County Hunt.

My hope is that it will help you fossil hunting in this area. It would have sure helped me!

Please comment and let me know what you think, changes, ideas, what you are finding!

 

5" Maclurites in Matrix!

5″ Maclurites in Matrix!

 

Liospira gastropods, horn coral and cephalopod end.

Liospira gastropods, horn coral and cephalopod end.

 

Halysites AKA Chain Coral-Ordovician

Halysites AKA Chain Coral-Ordovician

 

Cephalopods

Cephalopods

 

Hormatomas!

Hormatomas!

 

Holopea pyrene gastropods

Holopea pyrene gastropods

 

Trochonema sp.

Trochonema sp.

 

Receptaculitid Cross Section

Receptaculitid Cross Section

 

Prasopora Bryozoan

Prasopora Bryozoan

 

Beautiful Strophomena planoconvexa!

Beautiful Strophomena planoconvexa!

 

Liospira Gastropods

Liospira Gastropods

 Think “skipping stones” for Liospiras.

Note: Complete Receptaculitid.

Note: Complete Receptaculitid.

 The one in the middle towards the top.

Failleana rowley cephalon - note crinkles on front.

Failleana rowley cephalon – note crinkles on front.

 

A nice 3D image of the Flexicalymene trilobite pygidium.

A nice 3D image of the Flexicalymene trilobite pygidium.

 

Enrolled Anataphrus borreaus trilobite aka "Waldo".

Enrolled Anataphrus borreaus trilobite aka “Waldo”.

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