ATTENTION MEMBERS: Be sure to keep site notes with the specimens you
found that day.
Extensive Site Notes for all three localities are NOW ONLINE in the Members-Only area.
Microfossils Found at Site #1
The Arnheim is famous for its phosphatic hash layers yielding good quantities of microfossils. This site was no exception.
We took sample clay from the surface home and washed the clay to sift out tiny
microfossils. These samples were taken from the Arhneim Formation. Here are some
of the specimens we found. (below)
(NOTE: Digging is strictly prohibited on the Brookville Indiana road cuts. Please only take samples of clay from the surface. You don't need much clay to find a wealth of microfossils. Please don't dig holes. We want to be allowed to collect these sites in the future.)
The lines are shown for scale. Please excuse the poor resolution. I used my flat bed scanner to create these images.
Common were jet-black jaws of worms, called Scolecodonts .
Above are varieties of a common, but mostly overlooked Arthropod called Ostracoda.
Ocasionally, you find a single plate from the rare problematic fossil, Machaeridia.
Above is a clam called a Nuculites. It is not an Ostrocod, but many Ostrocods are overlooked because they look so much like these, more common, clams.
Next Page: How these microfossils were extracted from the clay
Site 1: Collecting || Fossils Found || More Fossils Found || Microfossils Found || Collecting Microfossils
Site 2: Collecting || Fossils Found
Site 3: Collecting || Fossils Found
Back to Field Trip Index
Back to Dry Dredgers Home Page
The Dry Dredgers and individual contributors reserve the
rights to all information, images, and content presented here. Permission to
reproduce in any fashion, must be requested in writing to email@example.com.
www.drydredgers.org is designed and maintained by Bill Heimbrock.