Latest Images

HUGE Nautiloid?

Fri, 17 May 2013 18:30:41 +0000

The nautiloid Endoceras, found in Winnebago Co. in northern Illinois. It's most likely from the Galena or Platteville group (Ordovician period).

Stromatoporoid? Bryozoan?

Tue, 17 Jan 2012 02:34:08 +0000

Found this in a creek bed so I'm unsure of it's origin. It's fossilized in sandstone, and being from northern IL, I'm guessing maybe it's from the St. Peter Sandstone? Not sure what it is really...

Baculites- ammonite

Tue, 17 Jan 2012 02:28:24 +0000

Eroded out of the Pierre Shale (Cretaceous) in South Dakota.

Tabulate coral

Tue, 17 Jan 2012 02:24:43 +0000

From the Ordovician

Crystalized nautiloid

Tue, 17 Jan 2012 02:24:07 +0000

Ordovician. One of my favorites.

Rugose coral

Tue, 17 Jan 2012 02:23:23 +0000

Ordovician or Silurian

Halysites (chain coral)

Tue, 17 Jan 2012 02:16:28 +0000

Silurian of northern Illinois.

Gastropod cast & mold

Tue, 17 Jan 2012 02:15:45 +0000

Ordovician or Silurian

Hormotoma?

Tue, 17 Jan 2012 02:15:08 +0000

Ordovician of northern Illinois.

Maclurites

Tue, 17 Jan 2012 02:14:28 +0000

From the Ordovician of northern Illinois.