Dry Dredgers Field Trip
April 29, 2006
Brookville, Indiana
Arnheim, Waynesville and Liberty Formations, Late Ordovician Period
Fossils Found That Day
Lots and lots of fossils were found at the Brookville site that
day. Probably the best was a rock with HUGE Ostracods on it. Most Ostracods in
the Ordovician require a hand lens or microscope to see and are considered
microfossils. Not these. They are about a centimeter long. Check out the
pictures below. In the first pic, one is shown with a Flexicalymene
trilobite. Okay, it's a tiny Flexi. But it makes you think... "Did
Ostracods eat Trilobites???"
There were other oversized "small" fossils found
that day. Here's what I think is a giant Cornulites. It looks a lot like the one we saw
presented by our feature speaker, Bob Morris, at our meeting the night before.
Certainly, we can credit Bob for making us keep an eye open for these worm
tubes.
A number of the usual Flexicalymene trilobites were found.
Shown below.
Here is a nice fragment of
the thorax of an Isotelus Trilobite,
showing multiple segments.
Next Page: Clams Found That Day
T A B L E O F C O N T E N T S
Page 1: Introduction to Site and
Collecting
Page 2: More Colleting Pics
Page 3: Big Small Fossils and Trilobites
Page 4: Pelecypods (clams)
Page 5: Bryozoans
Page 6: Cephalopods and Gastropods
Page 7: Articulate Brachiopods
Page 8: Inarticulate Brachiopods and Crinoids
Page 9: Corals
Previous Trips to this site
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