Dry Dredgers Field Trip
September 28, 2013
Joint Picnic and Field Trip: Dry Dredgers and Kentucky Paleontological Sociey
Brookville, Indiana

Stop #4: Waynesville and Liberty Formations

The fourth stop was a site the Dry Dredgers visited last in March 2011. This time, since it was the fourth site after the picnic at about 3:44 pm, the crowd was thinning. Steve Felton, however had spent most of the afternoon at this site. We caught up with him while he was checking a secret spot for his ellusive platycerid gastropods. He knew we were coming, so he should not have been so surprised.

We didn't see any platycerid gastropods - Naticonema nor Cyclonema. But here's what we did find in the Waynesville and Liberty of stop#4.


There was a good layer for Flexicalymene retrorsa and Flexicalymene retrorsa minuens in the Liberty Formation exposure.

The most HUMONGOUS hypostome of an Isotelus was found. It was just a fragment, but if we had seen the entire trilobite, based on this fragment, it would have been at least 16 inches! (My own educated opinion).


Here's a straight-shelled nautiloid cephalopod that is of a less common genera. I'll have to do some research, but it looks different to me. (BH)


Here's a fragment of a horn coral from Stop#4.  It is hard to recognize because you are looking at the internal wall showing the cepta. This is likely to be Grewingkia canadensis.


Hebertella sp. (next 2 pics)

Here's a slab with large quantities of the sowerbyellid brachiopod Eochonetes clarksvillensis (previously Eochonetes clarksvillensis).

This site (stop#4), like the others in Brookville, Indiana we visited, have a wide variety of brachiopods. Many are hard to tell apart. Here are two similar brachiopods - Plaesiomys subquadratus (left) and Glyptorthis insculpta (right).

An extremely common brachiopod found at site#4 was Lepidocyclus perlamellosum. (Next 2 pics).

Good quantities of the brachiopod Leptaena richmondensis were found.

Plenty of examples of Strophonema sp. were also found.

This one is a little strange to me. It was found at the top of the cut, in the Liberty formation. I would have to say it's a small Glyptorthis insculpta.  If you think I'm right or wrong, email me at admin@drydredgers.org.

Here's a gutter cast that has the negative impressions of some shelled animal. It was also found near the top of the cut.

Here's yet another example of a bryozoan encrusting a clam and leaving the clam's external shell features on the underside of the bryozoan. In this case, the clam looks like Ambonychia sp. (next 2 pics).

Stop #4 is famous for crinoids. However, we did not find any. They layers must be covered up. We did find small numbers of crinoid stems. One is shown below.

That's all for this trip. I hope you enjoyed the report as much as we enjoyed the outing.

Return to the September 2013 Field Trip Home.

See Previous Trips to these sites:

July 2011
March 2011
April 2006
March 2005

April 2003

Back to the Field Trip Index Page

Return 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 admin@drydredgers.org.
www.drydredgers.org is designed and maintained by Bill Heimbrock.