Ammonoid (Trachyceras multituberculatum)

A Triassic fossil ammonoid, Trachyceras multituberculatum, from the Xiaowa Formation. This marine fossil, part of the Ceratitida order, features a coiled shell adorned with distinctive tubercles and spines along its ribs, giving it a knobby, rugged look. Its ceratitic sutures—wavy, saw-toothed patterns—mark it as an early ammonoid, related to but predating true ammonites.

The fossil comes with an acrylic display stand and a label featuring the specimen name, place it was found and age.

This is genuine fossil. All the specimens we offer come with a lifetime authenticity guarantee.

Condition: Good | Size of ammonoid: 2.63 inch | Age: 235 million years | Found: Guanling, Guizhou Province, China (Xiaowa Formation)