8.5″ Thurmanniceras thurmanni Fossil Ammonite | Barremian Cretaceous | Morocco | Genuine with COA

Description

Thurmanniceras thurmanni Fossil Ammonite (8.5″)

Geological Age: Barremian, Lower Cretaceous (~129.4 to 125 million years ago)

Location Found: Atlas Mountains Region, Morocco

Fossil Type: Ammonite (Extinct Marine Cephalopod)

Species: Thurmanniceras thurmanni

Order: Ammonitida

Superfamily: Desmoceratoidea

Family: Desmoceratidae

 

Specimen Overview:

This impressive 8.5-inch fossil ammonite is Thurmanniceras thurmanni, a distinctive and robust species from the Barremian stage of the Lower Cretaceous. It was found in the fossil-rich sedimentary layers of Morocco’s Atlas Mountains—an area known for its extraordinary Early Cretaceous marine deposits.

The fossil shown in the photo is the exact specimen you will receive. A 1cm scale cube is included in the image to provide a precise size reference. Please review the photo for preservation quality and overall dimensions.

 

Geological Context & Depositional Environment:

During the Barremian, Morocco was part of a vast subtropical epicontinental sea connected to the Tethys Ocean. These marine environments were ideal for ammonite proliferation and fossil preservation, with sedimentation favouring the development of limestone and marl beds rich in marine invertebrates.

Thurmanniceras thurmanni is a biostratigraphically important ammonite and has been used in defining various Barremian ammonite zones throughout Europe and North Africa.

 

Morphology & Notable Features:

Thurmanniceras thurmanni is characterised by its thick, moderately involute shell with rounded whorls and bold, sinuous ribbing across the flanks. It often features subtle ventrolateral tubercles or nodules and a broad, rounded venter.

This 8.5″ specimen is a textbook example of the species, exhibiting pronounced ribbing and excellent symmetry. Its preservation offers a fantastic study of Barremian ammonite morphology and provides strong visual appeal for display.

 

Authenticity & Guarantee:

All of our fossils are 100% genuine and come with a Certificate of Authenticity. This specimen has been professionally prepared, stabilised, and selected for its quality and scientific integrity.

 

Perfect For:

• Ammonite and fossil collectors
• Educational and palaeontological displays
• Natural history museums
• Geological reference and interior design décor

Bring home a remarkable fossil from the Early Cretaceous seas with this large and striking Thurmanniceras thurmanni ammonite—authentic, ancient, and naturally stunning from the Atlas Mountains of Morocco.