I can use help on the identification of a fossil collected on a
class field trip this past weekend. The photo is at:
http://tigger.uic.edu/~plotnick/LoneStarQuarryFossil.jpg.
The scale, top to bottom of the image, is about 2 cm.
Locality is in Northern Illinois, from the
LaSalle Cyclothem, upper Modesto Fm. -
lower Bond Formation; Age: Upper Pennsylvanian, Missourian
(Stephanian). Typical Pennsylvanian mid-continent fauna, lots of
Composita.
It's probably in the category of "oh yeah, I should have
known that," but I don't embarrass easily. - Thanks - Roy
Roy E. Plotnick
Professor
Department of Earth and Environmental Sciences
University of Illinois at Chicago
845 W. Taylor St.
Chicago, IL 60607
plotnick@uic.edu
office phone: 312-996-2111 fax:
312-413-2279
lab phone: 312-355-1342
web page:
http://www.uic.edu/~plotnick/plotnick.htm
"The scientific celebrities, forgetting their molluscs and
glacial periods, gossiped about art, while devoting themselves to
oysters and ices with characteristic energy.." -Little Women,
Louisa May Alcott