Dr. Sukhendu Mukhopadhyay

These look modern to me, they’re just too shiny imo

is the operculum of a modern gastropod that over time have been grounded polished by the sea

and addresing Gloria’s coment fossils of all ages can have spectacular lusters it all depends in the time that the mineralization took to ocur and the composition of the fossils them selfs

@carlos-solana-redondo yes you’re generally right but in this case the specimen(s) does appear to be modern and not fossilized. It still has its original shine and coloration, traits that are usually lost during fossilization. During fossilization it might acquire new colors/textures, but it will rarely keep all of its original features like is the case here. So I agree with @gloria-carr here, this is not a fossil specimen

Looks like it!

If it is it has been heavily metamorphosed. I’m seeing some fiberous strands that remind me of zeolite minerals such as actinolite.

thank you, mac.

Looks like some sort of nummulite to me, but I’m not entirely sure. Cool fossil though!

I agree with Cassie. It’s a nummelites. These microfossils then to be much larger than normal as they are one of the largest benthic foraminifera!

go on the back side,you can find many more tiny one…