RARE Fossil Ammonite – Defrossiceras defrossus, Sinemurian, Jurassic: YORKSHIRE, United Kingdom – Genuine with Certificate of Authenticity

Description

Fossil Ammonite – Defrossiceras defrossus

Geological Formation: Sinemurian

Geological Period: Jurassic (~199.6 to 190.8 million years ago)

Location: Yorkshire, United Kingdom

Certificate of Authenticity Included

Scale Rule Squares / Cube = 1cm

Full sizing details in the photo

This Defrossiceras defrossus ammonite fossil from the Sinemurian of the Jurassic period is a rare specimen from Yorkshire, UK. Known for its distinctive spiral and well-preserved features, this ammonite offers valuable insight into the early Jurassic marine life.

Species and Morphology Information:

• Species: Defrossiceras defrossus
• Geological Age: Sinemurian, Jurassic period (~199.6 to 190.8 million years ago)
• Depositional Environment: This ammonite was found in marine deposits from the Sinemurian stage, reflecting the rich Jurassic oceans.
• Morphology Features: Defrossiceras defrossus is known for its distinctive spiral shape with tight whorls. The well-preserved fossil showcases smooth ribbing and strongly coiled shells, characteristic of Jurassic ammonoids.
• Notable Features: The Defrossiceras defrossus ammonite is highly prized by collectors due to its rarity and excellent preservation.
• Family: Ammonitidae
• Superfamily: Ammonoidea
• Order: Ammonitida
• Biozone: The Sinemurian biozone is noted for distinct ammonoid species that thrived in the early Jurassic period, such as Defrossiceras.
• Depositional Environment: The fossil was deposited in a shallow marine environment, conducive to the formation of well-preserved ammonites in the Jurassic seas of Yorkshire.

Size and Visuals:

This Defrossiceras defrossus ammonite fossil measures approximately XX inches (as shown in the photos). The scale rule in the image represents 1cm, and full-size details of the specimen are provided in the photos.

Authenticity and Certification:

This Defrossiceras defrossus ammonite fossil is 100% genuine and comes with a Certificate of Authenticity. The certificate verifies that this specimen was sourced from Yorkshire, United Kingdom and dates back to the Sinemurian of the Jurassic period.

Why Buy This Fossil:

• Genuine Fossil: Comes with a Certificate of Authenticity verifying its Jurassic origin and Yorkshire provenance.
• Rare and Collectible: This ammonite fossil is a rare specimen from the Sinemurian stage, making it a valuable addition to any fossil collection.
• Perfect for Display: This fossil ammonite is an excellent display piece for any fossil collection, museum, or natural history display.
• Educational Value: Provides valuable insight into Jurassic marine life, ammonoid morphology, and the paleogeography of the Sinemurian period.

Note: The photo shown is of the actual specimen you will receive. The scale cube in the image represents 1cm, and full-size details are provided through the photos.