TF0321 - Ammonite

TF0321 hand specimen. Note radius of curvature and ribs.

TF0321 sketch.

Dactylioceras commune

Jurassic

Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida

Ribs
Imprint of inner whorls visible
Curved shape (part of coil)

Pyritised shell replacement