Pretty interesting looking stuff you got there. Looks like clay. I'll bet there's going to be some magnifying glass studies on the finished product, bet there's some very small bone and tooth fragments mixed in.
Final phase has arrived. Now just hours & hours of just going through the material one handfull at a time. Seperate containers for 1. teeth 2.bone/scales
3. All other ( unidentifiable sea floor debris )
Just setting this picture up I grabbed a few obvious things of interest...Biggest one is a "crusher " tooth.
Ten years ago I did the same thing but with much more material. Dont know if I want to get this involved again...