Worn echinoid from Spain?

[Max-fossils]

Hi all,

 

Some time ago I made a post asking about what the fossil my friend had found was. Now he gave it to me (because he doesn't have a passion for it), which of course I was really glad with. 

Anyways, by surprise he gave me a second one too. It's also from a beach near Sevilla (Spain); I'm thinking that it's another worn echinoid. Am I right?

 

Best regards,

 

Max

[doushantuo]

euu,denk het wel.

Don't ask for a taxonomic assignment

[Ludwigia]

I don't see anything there that would indicate echinoid, but the photo's blurry again.

[Micah]

 L̶o̶o̶k̶s̶ ̶a̶ ̶b̶i̶t̶ ̶l̶i̶k̶e̶ ̶a̶ ̶c̶r̶o̶s̶s̶ ̶s̶e̶c̶t̶i̶o̶n̶ ̶o̶f̶ ̶a̶n̶ ̶a̶m̶o̶n̶i̶t̶e̶,̶ ̶b̶u̶t̶ hard to tell.

Edited May 12, 2017 by Micah

[sdsnl]

I think I see some plates from an irregular echinoid.

[Fossildude19]

             

 

 

[abyssunder]

I see a worn echinoid showing the plates and the zig-zag pattern of sutures, like this one:

[westcoast]

I agree. Photos of the side (top in images posted) and underneath would possibly help confirm ID. 

[Max-fossils]

7 hours ago, doushantuo said:

euu,denk het wel.

Don't ask for a taxonomic assignment

I wasnt expecting any

[Max-fossils]

On 5/12/2017 at 1:37 AM, Ludwigia said:

I don't see anything there that would indicate echinoid, but the photo's blurry again.

Nope, the photo is good! The fossil itself is blurry

[Max-fossils]

4 hours ago, sdsnl said:

I think I see some plates from an irregular echinoid.

Thats what I see too.

[Max-fossils]

3 hours ago, Fossildude19 said:

             

 

 

It does help to see a bit more detail... Nice trick!

[Max-fossils]

2 hours ago, abyssunder said:

I see a worn echinoid showing the plates and the zig-zag pattern of sutures, like this one:

 

1 hour ago, westcoast said:

I agree. Photos of the side (top in images posted) and underneath would possibly help confirm ID. 

Yep, this is what I am seeing too!

[Max-fossils]

Here's another one that my friend found, which has already been proven by other members to be a worn echinoid. There is a big similarity

[Coco]

Hum, I am not sure about Max's "fossil"...

 

Coco

[Max-fossils]

Just now, Coco said:

Hum, I am not sure about Max's "fossil"...

 

Coco

Look at the pics above

[Ludwigia]

The one from your friend is clearly echinoid, but, like Coco, I'm still not convinced on the first one. Even with Tim's improvement, I still can't really see what you seem to be seeing.

[abyssunder]

I tried to sketch the plates as I see them, I do not know if I did it well.
Can we have a view from the side pointed with the red arrow?

 

[Max-fossils]

27 minutes ago, Ludwigia said:

The one from your friend is clearly echinoid, but, like Coco, I'm still not convinced on the first one. Even with Tim's improvement, I still can't really see what you seem to be seeing.

Well, see those "scales" on my friends' one? Well, if you look closely at the first picture, you should be able to see that same pattern.

[Max-fossils]

15 hours ago, abyssunder said:

I tried to sketch the plates as I see them, I do not know if I did it well.
Can we have a view from the side pointed with the red arrow?

 

Those are exactly the "scales" I meant! Thanks!

[Max-fossils]

15 hours ago, abyssunder said:

I tried to sketch the plates as I see them, I do not know if I did it well.
Can we have a view from the side pointed with the red arrow?

 

Here's a view from the red arrow:

 

[abyssunder]

Thank you! Now it's clear.

 

" Ambulacral zones are composed of a double series of plates, each plate being perforated by a pore-pair. This pore-pair connects the external tube-foot to the internal radial water vessel. The pore-pairs are placed towards the outer edge of each ambulacral plate, close to the adradial suture. The adradial suture marks the junction between ambulacral and interambulacral plates, while theperradial suture is the central line separating the two columns of ambulacral plates from one another. The upper edge of an ambulacral plate is the adapical suture while the lower is the adoral suture. " - as stated here

[Max-fossils]

15 hours ago, abyssunder said:

Thank you! Now it's clear.

 

" Ambulacral zones are composed of a double series of plates, each plate being perforated by a pore-pair. This pore-pair connects the external tube-foot to the internal radial water vessel. The pore-pairs are placed towards the outer edge of each ambulacral plate, close to the adradial suture. The adradial suture marks the junction between ambulacral and interambulacral plates, while theperradial suture is the central line separating the two columns of ambulacral plates from one another. The upper edge of an ambulacral plate is the adapical suture while the lower is the adoral suture. " - as stated here

Thanks, that's a lot of words! So in easy English; those marks signal a body part of a sea urchin?

[abyssunder]

Yes.

That's what it was, a sea urchin.

Nice find!

[Max-fossils]

6 minutes ago, abyssunder said:

Yes.

That's what it was, a sea urchin.

Nice find!

Thanks! It's not my find though, it's (just like the other fossil pictured) found by my friend, who actually has nothing to do with fossils. Therefore he gave them to me, knowing they would be in a more caring home.