Our program this month will be presented by Lincoln Shoemaker. His topic will be: Silurian Benthic Assemblage Zones: Tracking Sea Level Through Fossil Associations.
Summary: Since it was discovered that there was an association between modern benthic marine communities and water depths off of the Danish coast, paleontologists have sought to determine if fossil communities likewise showed depth related associations. Perhaps the first noteworthy discovery of deep-time fossil benthic communities' association with water depth was given by Alfred Ziegler in 1965 for the lower Silurian communities of the Welsh basin. Ziegler's findings outlined in order of increasing water depth the following brachiopod-dominated communities: Lingulid, Eocoelia, Pentamerid, Stricklandid, Clorinda, and the non-brachiopod graptolitic community. Ziegler's findings proved robust, with the same communities and variations of them occurring across the globe, notably in the lower Silurian of New York. This talk will discuss these communities, their evolution, and Silurian sea level.
Lincoln Shoemaker is a current graduate student at the University of Cincinnati working under Dr. Carlton Brett. His research is focused on describing recently discovered Hirnantian echinoderms from Indiana and Ohio. As a collector, Lincoln has spent most of his effort on the Silurian crinoids of the Waldron Shale and with the Mississippian Edwardsville Formation ("Crawfordsville") crinoids. Prior to starting at UC, Lincoln also worked as an invertebrate fossil preparator.
TIME: 8 pm
DATE: Friday, March 27,
2026
PLACE: Room 201, Braunstein Hall, UC Main Campus,
Clifton
SIMULCAST: via Zoom
- Link included in the paid members PDF version of The Bulletin
Fund Raising Auction We will hold our annual fund raising silent auction this month in Room 300 Braunstein Hall on UC’s main campus. See details later in this bulletin for the rules. All sales are cash or check only.
Location Change Beginning at the March meeting we will return to UC. The parking situation has been resolved for dues-paying members.
Beginner's Class
by Greg Courtney
The Beginner’s Class will not be held this month because we will use Room 300 for our auction. If any member would like to lead a future beginners class contact Greg at youthenrichment@fuse.net .
March Field Trip – One Day - Two Options
by Bob Bross
Our first outdoor field trip for 2026 is on Saturday, March 28th. It is planned
for the Napolean Quarry in Indiana; however, a second option is open for
Maysville Kentucky. Here are the details:
Option #1: MEMBERS ONLY:
A quarry in Indiana exposing both Ordovician and Silurian Period
fossils. The former is particularly rich in brachiopods and horn coral. The
latter is noted for echinoderms, especially cystoids, along with a wide variety
of other invertebrates, including rare trilobites.
Option #2:
Maysville KY. This site exposes the Edenian and Maysvillian stages of
the late Ordovician of the Cincinnatian Series. You will have an opportunity to
meet other clubs at this site. You do not have to be a Dry Dredgers member to
attend.
Directions regarding these sites are available in the full Dry Dredgers Bulletin PDF file that is emailed to dues-paying members.
If you would like to become a dues-paying member of the Dry Dredgers, here's how: http://www.drydredgers.org/register.htm
More interesting and informative articles, along with color illustrations is available in the full E-Bulletin that was emailed to dues-paying members.
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