Fossil Ammonite from Texas (Helix Fossil)
Fossil Ammonite from Texas (Helix Fossil)
Fossil Ammonite from Texas (Helix Fossil)
Fossil Ammonite from Texas (Helix Fossil)

Fossil Ammonite from Texas (Helix Fossil)

Regular price $150.00 Sale

Size: 5.9” in diameter

Age: 97.2-96 Million Years Old (Cretaceous)

Location: Grayson Marl Formation, Denton County, North Texas

Collexted: Summer of 2015

This Ammonite was collected in 2015. It has been polished with a sealant to prevent environmental/water damage from being kept outside, as is typical for limestone fossils. It is in excellent condition. Fossil ammonites from Texas are highly sought after by collectors.


Ammonites were marine animals belonging to the phylum Mollusca and the class Cephalopoda. They had a coiled external shell similar to that of the modern nautilus. In other living cephalopods, e.g. octopus, squid and cuttlefish, the shells are small and internal, or absent.