Saturday, November 28, 2009

Mortoniceras Ammonite Fossil

The distinctive ribbed coiled ammonite is known as the Mortoniceras sp. found in Tarrant County, Texas. It was found in Duck Creek Formation and the creature existed in Upper Cretaceous Period (Albian Stage; approximately 100 million years ago).

Thanks to Herb for allowing me to photograph this specimen.


LanceHall said...

Excellent specimen! I don't know the exact species of Mort., the sources are confusing.

Anonymous said...

My name is Lori Ferguson, I have two fossils just like the one you call Mort. Ammonite. They are big as a basket ball. My husband brought them home to me from an Oil Rig near Odessa Texas about three years ago. Cool to now know what they are.