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I have been unable to find these two Brachiopods in my books.  I would like to know if anyone can id them for me.  I have to add that I "assume" the first is a Brachiopod.  I have looked in Lower, Middle and upper Devonian Brachiopods of NY and also Devonian Bivalves of NY.

Thanks

Greg

20201210_115007 (2).jpg

20201210_115017 (2).jpg

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These look a bit more like Tropidoleptus carinatus, or Longispina mucronatus, to me.  

 

  5fd253aef325e_20201210_115007(2).jpg-horz.jpg

 

Image from Devonian Paleontology of New York by David M. Linsley

image_2020-12-10_130852.png

  

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Those look like Tropidoleptus, one of the most widespread brachiopods of the Middle Devonian. I have found them in Deer Lake, PA, Saugerties, N.Y, Buffalo area, and everywhere in between. Their presence indicates the Hamilton Group unless you're in PA. in which case it's the Mahantango. 

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47 minutes ago, Fossildude19 said:

hese look a bit more like Tropidoleptus carinatus, or Longispina mucronatus, to me. 

I considered number 16 for the top one.  But why the difference...does this not indicate by species?

Greg

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PRI is going all Digital...but, not expected for another 2 years...probably 3yrs...because 2020 is pretty much shot.

Greg

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3 minutes ago, grandpa said:

@Fossildude19 Tim, could you share your source for the above ref. "Middle Devonian Brachs".  Searching that title got me nowhere(?)  :DOH:

 

Devonian Paleontology of New York by David M. Linsley

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...How to Philosophize with a Hammer

 

 

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27 minutes ago, grandpa said:

Thank you Kane. 

 

For those wanting a copy of this book here is a link:

 

http://web.archive.org/web/20161226203054/http://www.museumoftheearth.org/files/pubtext/Linsley_1994.pdf

The links to the PDF are dead. It appears that PRI is selling an update:

FIELD GUIDE TO THE DEVONIAN FOSSILS OF NEW YORK  by Wilson

 

https://pri-gift-shop.myshopify.com/products/field-guide-to-the-devonian-fossils-of-new-york

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18 hours ago, grg1109 said:

I considered number 16 for the top one.  But why the difference...does this not indicate by species?

Greg

There is a bit of a range in how brachiopods look, especially with differences in preservation and lifestage. What must be taken into consideration is the faunal lists that exist for certain sites. 

Not that they are one hundred percent accurate, but you have to look at what is typically found at these sites. 

 

Your items (in your first post) look like #10 and #22, to me. 

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1 hour ago, Fossildude19 said:

Your items (in your first post) look like #10 and #22, to me.

I can see the second one as #22.  However the first I still think looks like #16...as the "ridges" completely surround the fossil in even sections.

Greg

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