Dry Dredgers Field Trip
April 29, 2006
Brookville, Indiana
Arnheim, Waynesville and Liberty Formations, Late Ordovician Period
Brachiopods
Two major common species of Vinlandostrophia were found.
The first common species found is Vinlandostrophia cypha, shown
below.
The second common species found was Vinlandostrophia clarksvillensis,
shown below.
Less common were the Brachiopod Glyptorthis insculpta.
We also found some really nice samples of the Brachiopod, Hebertella.
But, by far, the second most common Brachiopod on the site was Lepidocyclus.
The award for the most common Brachiopod on the site, though, goes to Rafinesquina.
It was interesting to note that the edges of many of these Rafinesquina's
were jagged, not because their fossil form was broken, but because they were
damaged during life and had begun to heal before they died. Note the irregular
edges in the picture below.
A slightly less common relative of the Rafinesquina we found was the Strophomena,
shown in the next two shots.
Also, somewhat less common, but still plentiful, was the Brachiopod, Laptaena
richmondensis. (Next two pics).
Next Page: Inarticulate Brachiopods 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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