RARE Dichotomites ramulicosta Fossil Ammonite, Valanginian, Cretaceous: Gristthorpe, United Kingdom – 100% Genuine with COA

Description

This RARE Dichotomites ramulicosta fossil ammonite is an exceptional specimen from the Valanginian Stage of the Cretaceous Period, discovered at Gristthorpe, United Kingdom. Dichotomites ramulicosta is a fascinating ammonite species that lived during the Valanginian, the earliest stage of the Cretaceous. Known for its distinctive ribbing and spiraled shell, this fossil offers a rare opportunity to own a piece of marine life from the early Cretaceous period. The fossil’s preservation and quality make it an ideal specimen for collectors and enthusiasts of Cretaceous marine life.

Geological Information:

• Geological Stage: Valanginian, Cretaceous (Approximately 139 to 133 million years ago)
• Depositional Environment: The Valanginian stage occurred during a time when shallow marine seas covered much of the United Kingdom, including the area around Gristthorpe. The region was home to diverse marine life, including ammonites like Dichotomites ramulicosta, which thrived in these warm, shallow seas. The fossil was preserved in sedimentary deposits formed by the accumulation of marine life in these ancient seas.
• Biozone: This fossil is from the Valanginian biozone, which is known for its rich marine biodiversity, including the proliferation of ammonites and other marine invertebrates. The biozone offers key insights into the development of marine ecosystems during the early Cretaceous.

Fossil Features:

• Family: Dicotomidae
• Super Family: Dicotomoidea
• Order: Ammonitida
• Morphology: The Dichotomites ramulicosta fossil features a distinctively coiled shell with fine, ribbed surface details. The ribbing is branching, forming a dichotomous pattern (split in two), a characteristic feature of this species. The shell is evolute with visible whorls and clearly defined suture lines, making it a distinctive and well-preserved example of this ammonite genus. The spiraled structure of the ammonite is typically symmetrical, showing the elegant, yet functional, design of the shell for buoyancy and mobility in the Cretaceous seas.

Notable Details:

• This fossil is 100% GENUINE and comes with a Certificate of Authenticity, ensuring its authenticity and historical value.
• The specimen has been carefully selected for its high-quality preservation. The photograph provided shows the actual specimen you will receive, so you can be confident in your purchase.
• Scale Rule: The scale rule squares/cube shown in the photo represents 1cm, allowing you to accurately gauge the size of the fossil. Full sizing details are available in the photograph.

Condition:

This Dichotomites ramulicosta Fossil Ammonite is in excellent condition, showcasing its well-preserved ribbing, spiraled shell, and clear suture lines. The fossil has been cleaned and treated for display, making it an ideal addition to any Cretaceous ammonite collection or for those interested in the marine life of the early Cretaceous period.