Spyroceras?

[Bringing Fossils to Life]

Hi everyone! I was going through my Swatara Gap fossils when I came across this specimen, which I had originally thought to be coral. However, it looks similar to pictures of Spyroceras I've seen. Can anyone help? The first picture shows the texture, the second picture is a cross section, and the third picture is an imprint on the other side of the rock that looks cephalopody.

 

 

 

 

Edited January 24, 2022 by Bringing Fossils to Life

[Kane]

Isn’t Swatara Gap Ordovician?

[Bringing Fossils to Life]

That's what everyone says, but HynerpetonHunter and I have proved otherwise; Eldredgeops, Greenops, Koenenites, and other species found there come from higher up but fell down, and are in the brown, red, and black parts. The yellow and white rocks are Ordovician.

[Ludwigia]

Have you also considered that this may be a Conularia?

[FossilDAWG]

Devonian rocks at Swatara Gap have been well known and published on for a long time.  But congrats on proving that, I guess.

[Fossildude19]

@Bringing Fossils to Life

 

The pictures don't really show what you are seeing, except the first one.

But the oblique angle makes identification difficult.

2 hours ago, Kane said:

Isn’t Swatara Gap Ordovician?

 

The Gap itself was Ordovician. There was a dump pile of the Ordovician material taken from the Gap when it was closed to collection, and it left in a nearby state park -- that pile is long gone. The exposures that are available at the State Park are Devonian in age.  As Don stated, this has been known for a long time.

 

 

 

[Bringing Fossils to Life]

It could be Conularia, but it looks slightly different from pictures I've seen. I didn't know about Swatara Gap having Devonian before HynerpetonHunter suggested it to me, as he's done more research on it than I have. The fossil looks very similar to this Spyroceras picture, but because of its elliptical shape I would say coral otherwise.