I had my first go at specifically targeting mini fossils (not so much micro as they can just about be seen by the naked eye and gathered by hand). I took about a kilo of gravel/sand mix from various points at an oxford clay site then picked through it.
All scales are in mm.
Some things are easy to ID - tiny belemnite - 6mm long but perfectly formed.
- I actually found even smaller ones than this but they dont look so recognisably belemnite shaped. The really tiny ones are somewhat featureless straight rods from what I have seen.
Tiny crinoid section - again just a scaled down version of the adult in appearance.
Now for something odd though it looked familiar from seeing it in a book somewhere but I cant remember where - doh! Its very 3d - its like a flattened 'jack'.
Piece of vertebrate bone - oddly the second such piece from the exact same spot that look near identical in shape - I did wonder if they could be ear-bones (Otoliths)?
Next I found a surprising abundance of sections that look like this:
I am in two minds over those - they remind me of ray stingers but I also thought they could be echinoid spines? They are somewhat octagonal in cross section.
This next one is pretty weird - I am thinking some sort of fish lower jaw or palate? Second picture from above showing the gap between the two ridged sides.
Final one is also fishy :p I cant decide if its a fossil or part of some fishing lure though it seems a bit small... Nice spots though.
Thanks for looking - any suggestions towards IDs for the various unknowns gratefully accepted