View in section : you can see a pyramid of five tubes.That does not seem to be a fin spine. It doesn't seem to belong to a Chondrichthyes .

I thought it was a cephalic spine of Hybodont. But it seems to be a big placoid scale.

Tooth of Archosauriforms. Worn distal carina and rounded apex. Lengh = 8 mm. Very high serration density = 34 denticles per 5 mm. Is it aTheropods or a Crurotarsi tooth?

It doesn't seem to belong to a Batrachomorphs. Can that be a dermic bone of a Crurotarsi like a Phytosaurs? Or Maybe a dermic bone of a Placodonts? The lower part is smooth and flat. The top is...

Is it a piece of Hybodus sp.? The top. Three cusps of decreasing size seem visible. They seem hight. Lateral view. The lower part.

What is it? It doesn't seem to be a crown. I don't know how to direct this object. Lengh = 1,8 mm.

What is it? Lengh = 1,5 mm.

Is it a piece of a crown? The top. Lengh : 1,2 mm. Lateral views. The lower part.

Is it could be a piece of crown of Acrodus sp.? The crown extends beyond the root as in Lissodus. Is this an unusual form of Lissodus minimus? The top. Lengh : 1,5 mm. The lower part.

Lengh = 6 mm. Is it a crown of Chondrichthyes? An Holocephali? A Palaeozoïc helodont?