Fossil Ammonite Pavlovia pallasioides, Jurassic, Upper Kimmeridgian, Bucks UK, Genuine Specimen with COA

Description

Offered for sale is a beautifully preserved Fossil Ammonite of Pavlovia pallasioides from the Upper Kimmeridgian Stage of the Jurassic Period, collected from deposits in Buckinghamshire, United Kingdom. This highly distinctive ammonite represents an important faunal component of the late Jurassic marine ecosystems of Europe.

The specimen you see in the photographs is the exact fossil you will receive, carefully selected for its quality and authenticity.

Scale Rule Squares / Cube = 1cm — full sizing is shown in the accompanying images.

Key Geological and Scientific Information:

• Species: Pavlovia pallasioides
• Fossil Type: Ammonite (extinct marine cephalopod)
• Geological Period: Jurassic
• Geological Stage: Upper Kimmeridgian (~152 million years ago)
• Location: Buckinghamshire (Bucks), England, UK
• Order: Ammonitida
• Superfamily: Perisphinctoidea
• Family: Dorsoplanitidae
• Described By: von Buch, 1830

Morphology Features:

Pavlovia pallasioides is renowned for its highly evolute shell, with all whorls clearly visible from the side. The whorls are adorned with fine, dense ribbing that continues unbroken across the venter, and the shell is typically flat-sided with a moderately rounded outer edge. Its sharply defined ribs and open coiling make it one of the most recognisable ammonite forms from the Late Jurassic.

This specimen clearly exhibits these features, including the typical dense ribbing and strong ornamentation expected of the species.

Depositional Environment:

The fossil was preserved in shallow marine sediments, likely calcareous muds or fine silts deposited in the Kimmeridge Clay Formation or closely associated Upper Jurassic strata. These conditions allowed for rapid burial and excellent fossil preservation.

Stratigraphic and Biozone Context:

Pavlovia pallasioides is found within the Upper Kimmeridgian ammonite assemblages, especially in association with the Pavlovia Zone, used in northern and central European Jurassic stratigraphy. It serves as a useful marker species for correlating late Jurassic sedimentary sequences across the UK and Europe.

Scientific Significance:

This species is important for both biostratigraphy and evolutionary studies, representing a lineage that leads toward the more tightly coiled Pectinatites and early Aulacostephanus species. Its unique morphology and relatively limited stratigraphic range make it a key fossil for Jurassic research and collector reference.

Authenticity Guarantee:

All of our fossils are 100% genuine specimens, professionally sourced and handled with care. Every fossil includes a Certificate of Authenticity, confirming species identity, age, and location of discovery.

This Pavlovia pallasioides ammonite is an excellent example of Upper Jurassic paleontology and makes a fine addition to any fossil collection, teaching display, or gift for natural history enthusiasts.