Another ID from Holland

[Jcnw]

Hi guys,

 

my last find an then i’m out for the moment, did my research, but at the moment I see shapes in every rock.. Can you take a peak if this is of interest?

I Do see small shell shaped forms, but i’m not sure what the 4 to 5 round, and smooth impression are, they are smooth as silk, and vinger top size ( on boths sides present, furthermore the lobster red shape, that looks a bit lime a shrimp to me.

Some location: Doesburg Holland, most likely Pleistocene deposit layer, exposed due to sand mining.

 

i’ll post some overview shots, follwed by some magnified ones.

 

thxn and gr J 

[Jcnw]

With small loop

[Fossildude19]

Looks like chert or dolostone, to me. 

The only fossils I am seeing are the things in the last two pictures. 

They appear to be cross sections, so I don't know what they could be. 

[Rockwood]

The last one might be exposed enough to suggest crinoid holdfasts ?

[Jcnw]

Ok thxn all,any advice on how to clean this? Did attempts with plane H2O and a toothbrush, but it doesnt do much. Same with table vinegar. Some fine sandpaper to gently remove the top layer?

 

thxn!

[Rockwood]

If you want sections to study get a tile saw blade and slice it like a loaf of bread.

[Harry Pristis]

The multiple conchoidal fractures are odd.  Is there any pattern to the flakes -- edge development, parallelism?  It looks like the right size to smash bones of Pleistocene megafauna.