9 April 2018

Orthocone nautiloids of the Lexington Limestone

Posted by Callan Bentley

I took a trip last week to Kentucky. My colleague Kent Ratajeski from the University of Kentucky took me out on a nice all-day field trip to examine some of the local geology. I was particularly impressed with the large straight nautiloid fossils that abounded in the Ordovician-aged Lexington Limestone. Here are a series of photos I took of these orthocones, all on pavement exposures (horizontal bedding planes) with my DSLR lens cap for scale:

I also found a loose one that had weathered out in three dimensions, like a section of stalactite:

Very cool to have so many big, detailed fossils around!