Moroccan Fossil Reveals Ancient Dinosaur Highways Across Continents

A newly identified species of titanosaur discovered in Morocco is challenging established scientific theories regarding the geographic isolation of dinosaurs during the Late Cretaceous period. The discovery suggests that ancient continents may have been connected by intermittent land bridges or island chains, facilitating the migration of large herbivores across vast distances.

The dinosaur, named Phosphatotitan khouribgaensis, lived approximately 70 million years ago. Its existence provides evidence that North Africa was not entirely isolated from other landmasses during the final age of the giants, as previously believed by many researchers.

Fossil Evidence and Classification

The remains of Phosphatotitan khouribgaensis were recovered from the Oulad Abdoun Basin in Morocco’s Khouribga Province. This region is recognized for its phosphate-rich deposits, which have preserved various fossils from the Late Cretaceous and Early Paleogene.

Paleontologists identified the new species using a collection of partial skeletal remains. The recovered material includes:

• Partial vertebrae from the back and tail
• Fragments of the sacrum
• Portions of the pelvis

These fossils were sufficient for researchers to distinguish the specimen as a distinct genus within the titanosaur lineage. Titanosaurs are a family of long-necked, herbivorous dinosaurs known for being among the largest land animals to ever exist.

The Dinosaur Highways Theory

The discovery is central to a theory regarding dinosaur highways. This hypothesis proposes that dinosaur species migrated between continents using temporary land bridges or chains of islands that emerged as sea levels shifted.

For decades, the prevailing scientific view was that Africa remained largely isolated during the Late Cretaceous. However, the presence of Phosphatotitan khouribgaensis suggests that connection points existed, allowing various dinosaur groups to spread and evolve across different regions while still maintaining evolutionary ties to distant populations.

Geological Context of the Oulad Abdoun Basin

The geological setting of the discovery provides insight into the environment of the Late Cretaceous. The fossils were found in sediments deposited in a warm, shallow epicontinental sea that once covered significant portions of North Africa.

The phosphates of the Oulad Abdoun Basin of the Khouribga province consist of phosphatic sandstones, marls and limestones

Study published in the journal Diversity

These sediments formed as part of a broader belt of phosphates along the margins of the Atlantic and the Tethys Ocean. This dynamic interface between land and sea influenced both the evolution of the species living in the region and the subsequent preservation of their remains.

The rarity of such fossils in the region makes the discovery of Phosphatotitan khouribgaensis particularly valuable for documenting ecosystems that are otherwise poorly understood. The findings indicate that North Africa supported a diverse array of dinosaur groups during the Maastrichtian stage of the Late Cretaceous.