I've never known what fossil is this, any idea?

[AtariYMas9]

As you can see it has a flaky texture.

 

 

 

[Ludwigia]

Please tell us at least approximately where it was found, stratigraphy if known and measurements.

[AtariYMas9]

I found it at Alicante, Spain, on a sedimentary environment as a sepparated piece in a river.

the vast majority of fossils here are from sea creatures.

The dimensions are: 64mm x 35mm

[Ludwigia]

Perhaps the imprint of part of a bivalve?

[Fossildude19]

I'm reminded of bryozoans by this piece. 

[AtariYMas9]

On 7/8/2024 at 11:37 PM, Fossildude19 said:

I'm reminded of bryozoans by this piece. 

A small research was enough to verify that this is the case, I didn't know of the existence of these organisms.
Thank you.