Relatively rare teeth: top predator's econiche was occupied mainly by sandsharks in Eocene.
Instead of this, carcharhiniform teeth more often are well-preserved. Maybe, due to their compactness.
Physogaleus
Cappetta, 1980
family Carcharhinidae Jordan & Evermann 1896
A well-preserved tooth.
Stereopairs
The same genus. An anterior.
One more Physogaleus tooth. Male anterior.
Galeocerdo latidens (Agassiz, 1843)
Carcharhinidae
Two more teeth from the same species:
posterior? pathological?
Abdounia Cappetta 1980.
(Carcharhinidae)
Rather rare for this location symmetrical teeth.
Unique tooth with such roots. Evidently, pathological.
Other nice specimen
A thick tooth. Triakidae?
Another uncommon type of teeth...
The only without any serrations/cusplets
Juvenile? One of the smallest non-Scyliorhinidae teeth.
Sometimes whole crown of a small tooth is semitransparent. And translucent enameloid allows to look into it's interior.
Stereolook reveals some inner details. Note dark spots at the base of the crown. Holes for vessels to enter pulp cavity?
A small symmetrical specimen.
Probably, symphyseal.
Foumtizia Noubhani and Cappetta, 1997
(Scyliorhinidae Gill 1862)
The smallest tooth in the collection. Obtained during sand screening through fine mesh.
Skin of recent Prionace glauca (Carcharhinidae) with placoid scales. Image with extended depth of field, created from 123 frames with CombineZP. A piece from somewhere near beginning of the tail, in the middle between upper and lower sides of the body. Judging by orientation of the denticles, head was at the left. A specimen from a fish shop. Quite tasty.