I would appreciate any thoughts on whether these are fossilised bones. They were found together in Sandy Bedfordshire, in a sandy soil type. The rocks are solid and heavy. Note the holes through some of them, and one has a cross sectioned exposed which appears to display channelling.
Thanks for your help,
Difficult to say from the photographs, but I do not think this is fossil bone, the texture appears to be granular and the circular section more likely to suggest a pyrite concretion.
Identifying fossil bone from rock or concretion can be tricky. Key features to look out for:
You may like to look at some of the fossil bone images at: http://www.nhm.ac.uk/natureplus/community/identification/teeth-bones
Hope this helps a little,
I agree with Fiona - not bone or fossil bone.
It is probably abiogenic. There is clearly a good deal of iron in the sediment, and iron-rich sediments are good candidates for concretions, Leisegang rings, etc - features showing movement of iron / iron compunds through the rock. Sometimes fissures in the rock can control the development of concretionary structures, which can result in somewhat tubular shaped objects (the fissures can form a long thin box, and the concretion approximates that, with rounded corners).
If I was forced to suggest a biogenic origin, it could be stagshorn coral or Thalassinoides. But it is not quite right.
See this discussion - http://www.nhm.ac.uk/natureplus/message/28828