Help! Want to know if there's a possibility this could be fossilized bone? I dug out of the cliff in an old chalk quarry along the north east coast of the UK near Scarborough/Filey known for fantastic fossils. Its completely different to the chalk that i pulled it out of, excuse the pun but it is rock solid whereas the chalk around it flaked and crumbled. Smells of the sea haha
Flints sometimes represent or include fossils, but there are many that are just strange shapes, some of which happen to look a bit like bones (or other things). Cavities in flint are not rare. Yours is just a strangely shaped piece of flint.