Brasilia cf bradfordensis Ammonite Fossil Bajocian Horn Park Dorset UK COA

Description

Brasilia cf. bradfordensis Ammonite Fossil from Horn Park, Dorset

This genuine Brasilia cf. bradfordensis ammonite fossil comes from the Inferior Oolite Group at Horn Park, Dorset, UK, and dates to the Bajocian Stage of the Middle Jurassic. It is a carefully chosen fossil specimen, supplied with a Certificate of Authenticity lifetime guarantee generic card. Full sizing can be seen in the photo, and the image shows the actual fossil specimen you will receive.

Brasilia ammonites from the Inferior Oolite are highly collectable British Jurassic fossils, valued for their classic Middle Jurassic age, attractive ribbed shell form and important geological context. Horn Park is one of the well-known fossil localities in Dorset for Bajocian ammonites, making this specimen especially suitable for collectors of British fossils, Dorset ammonites, Inferior Oolite fossils and Jurassic marine life.

Species and Scientific Interest

Brasilia cf. bradfordensis is an extinct ammonite belonging to the ammonoid cephalopods, a group of marine molluscs related to modern squid, cuttlefish and nautilus. Ammonites lived in ancient seas and produced coiled, chambered shells. The animal occupied the outer body chamber, while the earlier internal chambers helped regulate buoyancy as it moved through the water column.

The “cf.” in Brasilia cf. bradfordensis means the specimen compares closely with Brasilia bradfordensis, while allowing careful scientific caution in the exact species-level identification. This is a standard palaeontological notation used when a fossil shows strong similarity to a named species but is best labelled conservatively.

Brasilia is associated with the family Graphoceratidae, a Jurassic ammonite family that includes several important Middle Jurassic genera. These ammonites are particularly useful in biostratigraphy because their evolving shell forms help geologists date and correlate the rock layers of the Inferior Oolite Group.

Inferior Oolite Group and Bajocian Geology

This fossil dates to the Bajocian Stage of the Middle Jurassic, approximately 168 to 170 million years old. During the Bajocian, southern Britain was covered by warm, shallow marine environments where limestones, oolitic sediments, marls and shelly beds accumulated. These sediments later formed the Inferior Oolite Group, one of the classic fossil-bearing Jurassic rock units of England.

The Inferior Oolite is well known for its diverse marine fossils, including ammonites, bivalves, brachiopods, gastropods, echinoids, corals and other sea-floor organisms. Ammonites such as Brasilia are especially important because they record the changing faunas of the Middle Jurassic seas and help establish detailed zones within the sequence.

Locality: Horn Park, Dorset, UK

Horn Park in Dorset is a significant locality for Middle Jurassic fossils from the Inferior Oolite Group. The area is known for producing well-preserved ammonites and other marine fossils from Bajocian deposits. Specimens from Horn Park are desirable because they combine strong British locality information with scientifically useful Jurassic stratigraphy.

Dorset is internationally recognised for its Jurassic fossil heritage, and while many collectors associate the county with the Jurassic Coast, inland Inferior Oolite localities such as Horn Park provide a different and important part of the region’s palaeontological record. A labelled ammonite from Horn Park is an excellent addition to a collection focused on British Jurassic fossils, Dorset geology or Middle Jurassic ammonite faunas.

Morphology and Display Features

Brasilia ammonites typically show a coiled planispiral shell with visible whorls and attractive ribbed ornamentation. Depending on preservation, the shell may display fine to moderate ribbing, whorl detail, natural surface texture and subtle changes in shell profile as the ammonite grew. These features are important for identification and give the fossil its distinctive display character.

Natural colours may include cream, beige, grey, brown or iron-rich tones, influenced by the sediment and mineral conditions during fossilisation. Variations in matrix, surface detail, rib definition and preservation are part of the specimen’s authentic geological character. As the photo shows the actual fossil you will receive, this is an individual specimen rather than a generic stock example.

Authenticity and Collector Appeal

This Brasilia cf. bradfordensis ammonite is a genuine Bajocian Middle Jurassic fossil from the Inferior Oolite Group at Horn Park, Dorset, UK. It includes a Certificate of Authenticity lifetime guarantee generic card, giving confidence to fossil collectors, geology enthusiasts, students and gift buyers.

With its careful scientific labelling, British locality, Middle Jurassic age and classic ammonite form, this fossil would make an excellent addition to a Jurassic fossil collection, Dorset ammonite display, Inferior Oolite fossil suite, educational geology cabinet or natural history collection.