Carcharhinidae
Physogaleus contortus
Extinct tiger / contortus
Miocenecommon
A small carcharhinid often confused with juvenile tiger sharks. Its blade is twisted (contortus) — almost corkscrewing as it curves.
Typical size
0.3–1″
Trophy size
1.2″+
Age range
23–5.3 Ma
Body length
—
How to ID it in the field
- ▸Small (under 1") deeply curved hook tooth
- ▸Twisted blade — view from the side, edges aren't coplanar
- ▸Fine serrations only on the trailing edge
- ▸Common micro-fossil at Aurora and Calvert Cliffs
Quick reference
Shape
curved hook
Serrations
fine
Cusplets
none
Root
asymmetric
Color
Black, dark brown
Sample reference images
Use these visual references to compare angle, wear, and silhouette before making a final ID.
