The local limestone stratigraphy gives paleontologists ample opportunity to find specimens from the class Cephalopoda. These layers are all exposed as part of the Glenshaw formation, the dominant formation within Parks Township. The examples below represent a few of the many different cephalopods genera that are available.

Metacoceras, Solenochilus and Pseudorthoceras, and Mooreoceras.
Metacoceras, Solenochilus and Pseudorthoceras and Mooreoceras. from the Glenshaw Formation
Metacoceras, Solenochilus and Pseudorthoceras
Metacoceras, Solenochilus, and Pseudorthoceras from the Glenshaw Formation

Found Cephalopod Genus from the Glenshaw Formation

The following are single examples of each genus. I originally had the giant cephalopod identified as Brachycycloceras, but after some research, I am changing my identification to Solenochilus. During a visit to the Carnegie Museum, there was only one specimen, CM 29726, available to review, and it was re-cataloged during my stay. Therefore, I brought along my sample, specimen CG-0025. After reviewing and identifying its genus, we tracked down an example they had, which came from nearby Sewickley, PA.

After showing photos of the specimen to Royal Mapes, his opinion was different. He said that CM 29726 was defiantly not a Brachycycloceras and was closely aligned with Solenochilus. The Carnegie Museum specimen comes from the Pine Creek Limestone. The rock appeared very similar to Pine Creek limestone in Ford City, where I found several gastropods and a few cephalopod fragments.

Other genera have been recovered. These specimens need to be photographed and added to this list. They include Domotoceras sp., Metacoceras clinocostatum, and Schistoceras sp.

SpeciesBrush CreekPine CreekWoods RunAmes
Pseudortoceras knoxense.
Mooreoceras normale..
Poterioceras curtum..
Ephippioceras ferratum..
Megaglossoceras sp.?..
Liroceras sp....
Metacoceras cornutum
Metacoceras perelegans.
Tainoceras monilifer..
Domatoceras sp.
Solenochilus brammeri?..
Pennoceras seamani?..
Eoasianites sp....
Schistoceras hildrethi.
Schistoceras missouriense...
Stratigraphic distribution of cephalopods in the Glenshaw Formation.
Miller & Unklesbay, 1942, The Cephalopod Fauna of the Conemaugh series in Western Pennsylvania, Annals of the Carnegie Museum

Metacoceras Group Photo

Several Metacoceras Specimens

Solenochilus Specimens

Five different Solenochilus specimens in a group
Five different Solenochilus specimens in a group

Pseudorthoceras knoxense Group

Pseudorthoceras knoxense recreation using three different specimens.


Ammonoids are generally rare from the local Glenshaw formation. As of December 2021, I have only recovered four examples, one from the Brush Creek limestone locally and three from the Pine Creek limestone in nearby Kittanning. At least two of them are from the genus Schistoceras.

Schistoceras, CG-0091
CG-0091, Schistoceras. I have found the only example of this genus so far in the Brush Creek limestone.
Schistoceras, CG-0283
CG-0283, Schistoceras. One of three ammonoids recovered from the Pine Creek limestone. Where this was found, recoveries are typically flat and narrow. However, a partial piece of the shell and sutures on the opposite side helped confirm identification.