Finds of the day

[Shellseeker]

There are always curiosities: Out with my son, visiting for the week. these are his 3 best finds.

Sanddollar. @Sacha Can you confirm Abertella or not?

 

A bone. All suggestions greatly appreciated.

 

Finally , a Meg. Was this Meg "in process". If so,  did it fill with dentine or river mud?

 

Jack

[Tidgy's Dad]

Not a clue, of course, but I'm rather intrigued with the answers here as well. 

[Sacha]

I have no idea what you have there Jack. It doesn't look anything like A. dengleri to me.

[Al Dente]

Jack- I don't think you will be able to get an ID on the sand dollar because there isn't enough of it there. I can see only 1 fragment of a single ambulacrum. The rest are missing.

 

 

[Meganeura]

Pure speculation here - but I believe the Meg is part of one that originally was in process/is a file tooth, as the filling looks to be River mud that’s hardened as opposed to the normal fossilized filling I’ve seen on Megs. 

[Shellseeker]

3 hours ago, Sacha said:

I have no idea what you have there Jack. It doesn't look anything like A. dengleri to me.

 

1 hour ago, Al Dente said:

Jack- I don't think you will be able to get an ID on the sand dollar because there isn't enough of it there. I can see only 1 fragment of a single ambulacrum. The rest are missing.

 

Thanks for your responses. I was digging in an unusual patch of crumbly limestone,  wondering what processes had laid it down. My feeling was Miocene. Meg pieces,  ray teeth and broken spines,  small sharks including Sand Tigers, Dugong ribs, ONCE a dolphin tooth....in a previous trip

Then I found this fragment and hoped there was enough for you to ID.  I realized it was a very long shot. 

Now I will focus on the bone...