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Natural Science Forum / Biology / Paleontology / January 2006(partial) Fossil ID Please?
It's not mine - I took a photo for a friend. The fossil was found in Palos Park, IL, along the Cal Sag channel. Sorry I never measured it, but I believe it is about 2.5 inches long, just about as wide. http://www.ccfp-fishing.com/images/misc/fossil_1r.jpg Not much on rock aging, but I believe the bedrock is from the Galena/Platteville era. Palos Park should be about T. 37N and R. 14E http://www.isgs.uiuc.edu/cook-atlas/gpg.htm Thanks in advance! OZ > It's not mine - I took a photo for a friend. The fossil was found in > Palos Park, IL, along the Cal Sag channel. Sorry I never measured it, [quoted text clipped - 9 lines] > > Thanks in advance! You have the rear half of a very nice trilobite. Perhaps someone will be able to take that down to genus, but I can't. > It's not mine - I took a photo for a friend. The fossil was found in > Palos Park, IL, along the Cal Sag channel. Sorry I never measured it, [quoted text clipped - 11 lines] > > OZ Definitely a trilobite. Looks like the posterior end of a calymene species. It may have come from the Galena/Platteville area, but only if there is a Silurian-aged (Niagran) dolomite in that vicinity. It could also have come from the vicinity of the Kankakee River State Park. I don't know the area very well, so I couldn't tell you for sure what formation it came from, but it likely came from the Racine Dolomite. I hope this helps. George > > It's not mine - I took a photo for a friend. The fossil was found in > > Palos Park, IL, along the Cal Sag channel. Sorry I never measured it, [quoted text clipped - 20 lines] > > George ========== Thanks guys - I passed the information on to my bud. >> > It's not mine - I took a photo for a friend. The fossil was found in >> > Palos Park, IL, along the Cal Sag channel. Sorry I never measured [quoted text clipped - 26 lines] > ========== > Thanks guys - I passed the information on to my bud. De Nada. George |
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