We found these recently on the SW coast of the Isle of Wight. They were in the shingle so impossible to tell if they were erratics or out of the lower Cretaceous cliffs but I'm not sure what they are. They look like chert or flint in composition.
Any suggestions would be welcomed please.
I think they are coprolites.
I note the pellets they contain. It would be interesting to see those more closely (under a microscope). If it is a coprolite, one might be able to recognize bone or fish scale fragments, or to recognize those pellets as being fragments in their own right.
Good point - they do look like pellets . The scope pics are low resolution but I cannot see anything through a hand lens either like bone or scale fragments.
Thinking about it there are other possible clues too - the pellets are not entirely uniform but generally similar size and shape; nor are they regular in arrangement but often overlapping (imbricated) and they seem squashed together or flattened in some areas. Could they be from an animal that has fed on sediment containing pellets from other, smaller, ones prob inverts?
Uk Fossil Guy - yes - shrimp burrows - something along those lines - thanks for the name.
That leads me to a useful, if inconclusive, discussion
Hi UK Fossil Guy
Good id but it has left me with another question, because on the Holderness coast I have seen very similar specimens that are as thick as an adults wrist and probably bigger but distorted.
What are these from?
Unfortunately no images
Thank you Mike and UK Fossil Guy.
It seems obvious now especially when the rocks in situ have so many burrows which are easily recognised. But out of context I was stumped.
A good lesson in observation and environment - cheers