Devonian From Pennsylvania (Beltzville State Park)

[Johnny676767]

This was my first time at Beltzville State Park in Pennsylvania, USA. I believe these come the Upper Devonian Mahantango Formation. I saw similar examples in other posts as was hoping to confirm my guesses. Thanks 

 

1. Horn coral?

2. Crinoid stem?- not sure if that’s something to the left of the stem.

3. Rugose coral?

[connorp]

The second one could be an external mold of either a crinoid stem, or possibly from an orthoconic nautiloid. Hard to tell from the pictures.

[Fossildude19]

Correct on 1 and 2. 

#3 is a mold of a Pleurodictyum  sp. tabulate coral.

 

[Rockwood]

#2 Notice the crenelations in the top end indicating crinoid stem. Clockwise to the right from the top are two brachiopods and what looks like it may be a short section of cornulites.

[Johnny676767]

Thank you for the feedback