5.8" Fossil Shark (Asteracanthus) Dorsal Spine - Morocco

This is a 5.8" fossil, dorsal spine of a Cretaceous shark (Asteracanthus) from the Kem Kem Basin, Taouz, Morocco. This specimen shows lateral ridges and denticles along posterior edge. Spines of Asteracanthus are much rarer than the spines of Hybodus found in the same formation.

These spines are almost always found fractured and require repair. This example is no exception, it has several crack repairs along its length and the tip might be a composite from another spine.

The Kem Kem Group

The Kem Kem Group, also known as the Kem Kem Beds, is a significant geological formation located in southeastern Morocco, specifically in the region of the Anti-Atlas Mountains. This formation dates back to the late Cretaceous period, approximately 95 million years ago. The Kem Kem Beds are primarily composed of sandstone, siltstone, and claystone, interspersed with various sedimentary features that indicate a fluvial to deltaic environment.

The Kem Kem Group is renowned for its rich fossil deposits, which include a diverse array of prehistoric fauna. It has yielded a wide variety of dinosaur fossils, including theropods like Spinosaurus and Carcharodontosaurus, as well as large Sauropod dinosaurs such as Rebbachisaurus. Additionally, the beds are home to many other fossilized creatures, including crocodiles, pterosaurs, fish, and a range of invertebrates.

Paleontologists consider the Kem Kem Group an important site for studying late Cretaceous ecosystems and the evolution of vertebrate life. The fossils found in this region have provided valuable insights into the diversity and behavior of prehistoric species, making it a key location for both scientific research and fossil collecting. The striking landscapes of the Kem Kem Beds, with their colorful rock formations and dramatic geological features, also attract geologists and tourists interested in the natural history of the area.

A paper on this assemblage can be found at: Vertebrate assemblages from the early Late Cretaceous of southeastern Morocco: An overview

One of the tunnels dug into the Kem Kem beds by local miners following the productive fossil beds.
One of the tunnels dug into the Kem Kem beds by local miners following the productive fossil beds.
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DETAILS
SPECIES
Asteracanthus ornatissimus
LOCATION
Taouz, Kem Kem Basin, Morocco
FORMATION
Kem Kem Beds
SIZE
5.8" long
CATEGORY
ITEM
#208733
GUARANTEE
We guarantee the authenticity of all of our specimens.