Description
Genuine Tissotia tissoti Fossil Ammonite from Egypt
This listing presents a striking Tissotia tissoti ammonite fossil, originating from the Santonian stage of the Late Cretaceous and recovered in Abu Roush, Egypt. Estimated to be around 86–83 million years old, this fossil captures an extraordinary chapter of Earth’s natural history. The specimen photographed is the exact fossil you will receive, with a 1 cm scale cube included for size reference. Each ammonite is supplied with a Certificate of Authenticity, guaranteeing it as a genuine specimen.
Geological Setting – The Santonian Stage
The Santonian stage of the Late Cretaceous was a time of high global sea levels and warm shallow seas, which covered large areas of present-day Africa, Europe, and beyond. During this interval, ammonites flourished alongside diverse marine life including bivalves, echinoids, crustaceans, and marine reptiles such as mosasaurs. Sediments deposited in regions like Abu Roush, Egypt, are especially significant for their well-preserved ammonite assemblages, making them important both scientifically and as collectible specimens.
The marine environment where this ammonite lived was part of the vast Tethys Ocean, which stretched between Africa, Asia, and Europe. Its warm waters supported an abundance of life, with ammonites forming a key component of the ecosystem and serving as both predators and prey.
Species Profile – Tissotia tissoti
Tissotia tissoti belongs to the order Ammonitida and the superfamily Acanthocerataceae, a group of ammonites recognized for their robust shells and distinctive ribbing.
Notable features of this species include:
- Shell Morphology: Large, evolute shell with strongly ribbed ornamentation across the whorls.
- Ribbing: Bold, straight ribs running across the flanks and curving toward the venter, providing a sculptural, textured appearance.
- Whorl Structure: Wide umbilicus with whorls that overlap elegantly, giving the shell balance and symmetry.
- Sutures: Complex suture lines typical of advanced Cretaceous ammonites, aiding in taxonomic classification.
These morphological traits make Tissotia tissoti an excellent reference species within the Santonian ammonite faunas of North Africa.
Scientific and Educational Importance
Ammonites such as Tissotia tissoti are crucial for biostratigraphy, serving as index fossils that allow geologists to date and correlate rock layers across vast regions. The presence of this species helps to establish the timing and extent of marine transgressions during the Cretaceous.
This specimen also offers a valuable teaching tool. It illustrates evolutionary adaptation in ammonites, paleoecological interactions, and the rich marine biodiversity of the Late Cretaceous seas of Egypt. Its well-preserved ribbing and coiling provide an excellent study example for both amateurs and professionals in paleontology.
Collector and Display Value
This Tissotia tissoti ammonite fossil is a highly desirable addition to any fossil collection due to its scientific importance, rarity, and visual appeal. Its distinct ribbing and aesthetic shell form ensure it displays beautifully, whether in a private collection, as an educational resource, or as a decorative showcase of Earth’s ancient past.
- Species: Tissotia tissoti
- Order: Ammonitida
- Superfamily: Acanthocerataceae
- Age: Santonian, Late Cretaceous (approx. 86–83 million years old)
- Locality: Abu Roush, Egypt
- Guarantee: 100% genuine, with Certificate of Authenticity
Authenticity and Guarantee
Every fossil we offer is carefully selected for quality, provenance, and authenticity. This Tissotia tissoti ammonite from Abu Roush represents a fascinating relic of the ancient Tethys Ocean, providing both scientific insight and natural beauty.
A unique and rare opportunity to own an authentic ammonite fossil from the Cretaceous seas of Egypt, ideal for serious collectors, natural history enthusiasts, or as an educational specimen.





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