Yesterday I was taking a walk in my area of Cretaceous, and I found these two pieces.
At first I thought of misshapen fragments, of some kind of ammonite.
But at home looking at them in more detail, I realized that the ammonite is complete, (it hurts that they are not in better condition).
As I observe it seems that they are elongated, and crushed, and in a state of death, they folded. The most deteriorated one has a hole in the shell, in which the septa can be seen, and the other the sutures can be seen well.
The largest measures 2.3 ctms in its current state, (folded).
What kind of cephalopod can it be?