Here is a branching Lake Cumberland crinoid that I guess is a holdfast. It is a nice plate showing the branches and has a good blue color. ...

Here you can see some chambers of the siphuncle of an Ordovician cephalopod. Some water has been put on this section that was cut with a di...

Here is a Ordovician bryozoan found in eastern Jefferson County, Kentucky. Click on image to make larger to allows seeing the small little c...