Description
Rare Pterosaur Tooth Fossil from the Stonesfield Slate of England
This authentic pterosaur tooth fossil originates from the historic Taynton Limestone Formation, commonly known as the Stonesfield Slate, a Middle Jurassic geological unit found in parts of Gloucestershire and Oxfordshire, England. The fossil dates to the Middle Jurassic Period, approximately 168 to 166 million years ago, during the Bathonian Stage.
Pterosaur remains from the Stonesfield Slate are considered particularly significant because fossils of these flying reptiles are rare within the British Jurassic record. The formation has produced a range of important vertebrate fossils, including early mammals, dinosaurs, crocodilians, and pterosaurs, making it one of the most historically important fossil deposits in the United Kingdom.
This specimen represents a fossilised tooth from a pterosaur, a group of flying reptiles that dominated the skies throughout much of the Mesozoic Era. The tooth displays the characteristic conical form typical of many fish-eating pterosaurs that inhabited coastal and lagoonal environments.
The fossil has been carefully selected for preservation and display quality, making it an excellent addition to fossil collections, educational displays, and natural history exhibits. The photographs in the listing show the exact fossil specimen you will receive, and full sizing can be viewed in the listing images.
This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card, confirming its authenticity and geological provenance.
Scientific Classification of Pterosaurs
Pterosaurs were flying reptiles belonging to a distinct branch of archosaurs that evolved during the Late Triassic and persisted until the end of the Cretaceous Period.
Scientific classification includes:
- Kingdom: Animalia
- Phylum: Chordata
- Class: Reptilia
- Clade: Archosauria
- Order: Pterosauria
The Stonesfield Slate has produced fossils attributed to early pterosaurs, including species historically referred to the genus Rhamphocephalus, a group of long-tailed pterosaurs known from Middle Jurassic deposits in England.
Although isolated teeth cannot always be assigned to a specific species with certainty, their morphology clearly indicates their origin from a pterosaur adapted for catching small prey such as fish.
Morphological Features of Pterosaur Teeth
Pterosaur teeth are distinctive and adapted to their feeding strategies, particularly among species that hunted fish or small marine organisms.
Typical characteristics include:
- Slender conical crown
- Slight curvature toward the tip
- Smooth enamel surface
- Sharp pointed apex for grasping prey
- Narrow root structure for jaw attachment
These teeth were well suited for gripping slippery prey such as fish. Many pterosaurs possessed long jaws lined with multiple conical teeth, forming an effective trap for catching aquatic animals.
Geological Formation and Stratigraphy
The fossil originates from the Taynton Limestone Formation, a member of the Great Oolite Group, and is commonly known as the Stonesfield Slate.
Key geological details include:
- Formation: Taynton Limestone Formation
- Member: Stonesfield Slate
- Geological Period: Jurassic
- Stage: Bathonian
- Approximate Age: 168–166 million years
The Stonesfield Slate consists primarily of:
- Sandy limestone
- Calcareous mudstone
- Laminated marine and lagoonal deposits
These sediments were deposited in shallow coastal environments including lagoons, tidal flats, and nearshore marine settings.
Middle Jurassic Environment of Southern Britain
During the Middle Jurassic, the region that is now southern England was situated in a warm subtropical climate with extensive shallow seas and coastal lagoons.
The ecosystem supported a wide diversity of organisms including:
- Pterosaurs flying above coastal waters
- Marine reptiles
- Fish and sharks
- Early mammals
- Dinosaurs living on nearby land
- Marine invertebrates such as ammonites and bivalves
Sediment from rivers and coastal processes accumulated in lagoons and shallow marine basins, preserving bones and teeth from animals that lived in or around these environments.
Fossil Preservation within the Stonesfield Slate
The Stonesfield Slate is particularly well known for preserving vertebrate fossils within thin laminated layers of sediment. Bones and teeth were often transported by water currents before becoming buried in sediment.
Over millions of years, mineralisation replaced the original biological material, preserving the fossil within the surrounding limestone.
Because pterosaur bones were lightweight and hollow to aid flight, complete skeletons are rare. Teeth, however, are more durable and are among the most commonly preserved remains of these flying reptiles.
Historical Importance of the Stonesfield Slate
The Stonesfield Slate has played a significant role in the history of palaeontology. Fossils discovered in this formation during the eighteenth and nineteenth centuries helped scientists understand early mammals and reptiles from the Jurassic Period.
The deposit is particularly famous for producing some of the earliest known mammal fossils as well as remains of pterosaurs and dinosaurs.
Fossils from this formation remain highly valued by collectors due to their historical and scientific importance.
Authentic Fossil Specimen
This specimen represents a genuine pterosaur tooth fossil from the Taynton Limestone Formation, commonly known as the Stonesfield Slate, from Gloucestershire, United Kingdom.
Key details include:
- Authentic pterosaur tooth fossil
- Rare flying reptile fossil specimen
- Geological Formation: Taynton Limestone Formation
- Member: Stonesfield Slate
- Geological Age: Middle Jurassic
- Stage: Bathonian
- Approximate Age: 168–166 million years
- Locality: Gloucestershire, United Kingdom
- Exact specimen shown in listing photographs
- Full sizing visible in listing images
- Includes Certificate of Authenticity lifetime guarantee generic card
This fossil tooth represents a rare remnant of a Jurassic flying reptile that once soared above the coastal lagoons of Middle Jurassic Britain, making it a remarkable specimen for fossil collectors, geological enthusiasts, and natural history displays.
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