My first echinoid 7.27.23

Interesting. Is it possible that this is Eocene? Looks like Protoscutella or Periarchus.

2 hours ago, Al Dente said:

Interesting. Is it possible that this is Eocene? Looks like Protoscutella or Periarchus.

I have read that the Goose Creek Limestone (Miocene-Pliocene) produces echinoids, so I assume that is where this came from.  I don't believe there are any Eocene exposures unless you go up to the quarries in Harleyville.

2 hours ago, Fin Lover said:

I have read that the Goose Creek Limestone (Miocene-Pliocene) produces echinoids, so I assume that is where this came from.  I don't believe there are any Eocene exposures unless you go up to the quarries in Harleyville.

Do you have a photo of the bottom? I’ve seen a couple examples of Echinarachnius from South Carolina. That is the only Neogene sand dollar without lunules that I know of from the area.

Here you go.  Also, it's just over an inch across.

Interesting  !! Can you tell whether that was feeding damage on the top edge... i.e the shell would be partially healed ?

@Shellseeker, will healed damage look any different than an old break?  I'm not sure what I'm looking for.

I was hoping a periproct could be seen on the back. Not sure which genus this belongs to.

4 minutes ago, Al Dente said:

I was hoping a periproct could be seen on the back. Not sure which genus this belongs to.

So, is this an uncommon find for Summerville?  I've definitely never found even fragments of one before, but I know nothing about inverts.  

I once listened to a presentation by a UF graduate student on echinoid predation. They sampled fossils that had damage. Most damage were drill holes from a predatory snail. but a few were the nibbling of crabs or fish.  A very few seemed healed after predation, rather than ragged. I am searching the net for an example.

1 hour ago, Fin Lover said:

So, is this an uncommon find for Summerville?  I've definitely never found even fragments of one before, but I know nothing about inverts.  

You’ll have to ask other Summerville collectors. I would guess it is uncommon, particularly if it is younger than Eocene.

Bucket list… only half of one so far. That’s just lovely. It’s absolutely still, “delicate”. I don’t know if that makes sense. Of course it’s delicate, but I just mean its vibe is still contained. The broken pieces, even if large and visibly pretty, are missing the delicacy of a sand dollar. So they feel like a piece of fossil instead of what they are. 
 

Sorry for rambling. Currently looking through your awesome pictures to try and find a new tooth I found. 
 

Jp