I went looking for a coral called Pleurodictyum and found this specimen. It is two different corals: the bottom one is Favosites turbinatus (knee cap coral) and the coral growing on top of it might be a Pleurodictyum or Favosites hamiltoniae. These corals are found in the Beechwood and Jeffersonville Limestones.
Here are three specimens I pulled from the cleaning rack. The one the far left is the one shown above. It is appears to be two different corals. The middle specimen is some sort of Favosites and the right side coral appears to be Favosites "Emmonsia" tuberosa.