Can anyone please tell me more about these fossils? and again from Hornsea south beach. I've had this rock for a few months now and i kept thinking how can i get to that detail inside, so i decided to cut it with a tile cutting disc mounted on a small angle grinder. I had a look around the net on polishing rocks but it takes too long or it costs to much, then i remembered i had an old double sided whet stone. After using the coarse side for a few minutes and then the fine side, with water and spit for about 15 minutes, i could see this amazing detail almost like a picture. I've tried this with another rock with a couple of sponges inside and you can also see great detail, but that rock was a little harder and took me about 30 minutes to do.
The semi polished rock measures 50mm
A real eye-opener, eh?
Once you get started on this sort of thing (cutting and polishing/wetting/varnishing), it can be quite addictive.
You have a lump of biomicrite, ie. a limestone composed of fossils (bio) and a lime mud (micrite).
I see a pentamerous crinoid columnal (left), a gastropod (middle), fragments of bivalves and brachiopods, belemnite guards (I think; or maybe orthocone cephalopod), one of which has burrows in it (top). Maybe oyster shells (thick-shelled bivalves).
Not in this example, but sometimes in cross sections of brachiopds, you can see the delicate and intricate spiralia (http://www.mcz.harvard.edu/Departments/InvertPaleo/Trenton/Intro/PaleoPage/Terminology&Morphology/Images/brachlophophores.jpg).
The pale lump is slightly exotic (from somewhere else); it seems to have suffered solution then overgrowth before incorporation in the micrite.