Dry Dredgers Field Trip
April 29, 2006
Brookville, Indiana
Arnheim, Waynesville and Liberty Formations, Late Ordovician Period

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Page 6

Cephalopods  

We found this very interesting Cephalopod that was completely encrusted with the special Bryozoan, Spatiopora. The monticules are aligned in the direction of the Cephalopods travel. 
spatiopora1.jpg

The Cephalopod fossil was also filled with Calcite crystals.
spatiopora2.jpg
spatiopora3.jpg

Here are some pictures of the more usual preservation of these Cephalopods. Siltstone internal molds.
cephalopods1.jpg
  cephalopods3.jpg cephalopods4.jpg  

Gastropods

The gastropod Cyclonema were found in good quantities here. Cyclonema are most often found with the external shell features preserved, as shown in the pictures below.
cyclonema.jpg
cyclonema2.jpg cyclonema3.jpg

The rest of the gastropod genera were found as internal molds.
snail.jpg

Next Page: Articulate Brachiopods Found


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

2005
2003


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