from Jacksboro, TX

[rwise]

Found this first one in Jacksboro, TX, Lost Creek Dam.  Finis Shale Formation, Pennsylvanian.  Would like to identify.  Gastrioceras? or maybe Vidrioceras?  

 

 

[Heteromorph]

I’d say Shistoceras hildrethi (Paraschistoceras hildrethi is now considered obsolete and incorrect nomenclature):

 

From, “Color Guide to Pennsylvanian Fossil of North Texas” by Mark McKenzie and John McLeod.

 

Also see: 

Nice specimen!

[rwise]

Thanks Heteromorph.  Looks like this is correct......I have Mark's book, but missed the fingerprint pattern in the picture.  Thanks again for the correct name.

 

RW

[facehugger]

Cool finds! Look like I need to plan an exploratory mission to Jacksboro in the immediate future...

 

Pennsylvanian? You ever find an trilos in that formation? 

[rwise]

I haven't but there have been a few.  The site is covered with fossils and is a great site to collect.  I have been probably 10 times over the last five years and always find something new.

 

 

[fifbrindacier]

That's a nice find, congratulations .