I usually collect Vertebrate fossils from the Lower Oxford Clay of Peterborough. But recently I’ve decided to have a go at searching for micros in some Oxford Clay matrix. I had been told by other collectors from the UK that the fossil density for shark, ray and fish micros in Jurassic matrix from the UK was pretty low so I wasn’t really expecting to find many if any micros in a sample of this size. I was really surprised that I found as many micro specimens as I did. I found 10 small fish teeth, one larger fish tooth, one shark tooth (maybe fish?), 7 unknown to me micros, some fossil wood?, and several complete and lots of broken small shells. I tried hot water at first to break down the clay which was only partially successful. 3% H2O2 was my second attempt which worked really well.
All specimens range from 1mm to 3.5mm.
Any help in identifying these micros is appreciated.
Fantastic images and finds, if you had found them on the Holderness coast I would have had a chance of knowing what they are, but these specimen are special.
Very nice finds
Very nice - I also dabble in micro-fossils and have looked at the lower oxford clays in the Peterborough area.
The top one and the other curved pieces are actually the hooklets of belemnites - nice detail on these - if you look at your top picture closely you can see shortly after the tip a notch with a line coming in from it?
Thats the seperation point where the claw was designed to break off at.
The teeth with the white tips are all fish teeth - some attribute all the teeth with white tips to a particular family of fish but I would leave it at fish personally unless you can find a more complete section.
Great pictures by the way!
Edit - oh and please post any other unknowns - I'm not an expert and frankly I have a few unknowns of my own from the oxford clay but I may know what some of them are
Excellent finds,Darren, and good photos.
I agree with Ryan.
1-5 and 13 are Micro Onychites, Belemnites hooks of the arms.
Here is a picture :