Spinosaurid or Theropod Dinosaur Tooth Fragment
Spinosaurus cf. aegyptiacus • Vertebrate body fossil (isolated tooth)
Geological Period
Cretaceous
Estimated Age
95 to 100 million years ago (Cenomanian stage)
Preservation Type
Permineralization and fossilization of dentine and enamel, with some natural weathering and wear on the apex and base.
Condition Assessment
Fair to Good. The specimen is an incomplete tooth crown, missing the root and presenting a broken base, but retains good surface preservation on the main body.
Taxonomic Classification
Phylum: Chordata, Class: Reptilia, Order: Saurischia, Suborder: Theropoda, Family: Spinosauridae
Morphological Description
Conical, robust, slightly curved crown fragment lacking prominent serrations (carinae), which is typical of spinosaurid teeth adapted for holding slippery prey. The surface exhibits a smooth enamel texture with subtle longitudinal striations visible upon close inspection.
Rock Matrix
None attached (matrix-free isolated tooth). Originally derived from sandstone or clayey matrix typical of fluvial deposits.
Formation & Location
Kem Kem Group, southeastern Morocco
Size & Dimensions
Approximately 20 mm in length, comparable to a medium-sized isolated theropod tooth fragment.
Value & Rarity
Estimated Market Value
$20 - $50 USD
Auction Estimate
$15 - $40 USD
Rarity Assessment
Common. Isolated theropod and spinosaurid teeth are frequently recovered from the Kem Kem beds of Morocco.
Scientific Significance
Provides insight into the carnivorous dinosaur fauna of North Africa during the mid-Cretaceous, contributing to our understanding of semi-aquatic theropod ecology and predator-prey dynamics in ancient river systems.
Preparation Recommendations
No aggressive preparation needed. Clean gently with a soft dry brush if necessary. Store in a stable, dry environment away from high humidity.
Notable Features
The rounded, non-serrated cross-section is characteristic of spinosaurid teeth, specialized for piscivorous (fish-eating) habits rather than slicing flesh like traditional carnivorous theropods.