Unveiling Khinjaria acuta, The Fierce Ancient Marine Reptile

Scientists are excited about the new marine lizard species called Khinjaria acuta found in Morocco. This scarylooking creature lived in the sea around 66 million years ago at the same time as the Tre and Triceratops. Its pointed teeth are so sharp they look like daggers, hence the name. Khinjaria acuta helps us understand more about how marine reptiles evolved and what their world was like.

Traits of Khinjaria acuta

  • Size and Looks, Khinjaria acuta was bigabout as long as an orca, or 26 feet. It had a strong jaw and teeth shaped like daggers. Its name comes from the Arabic word for dagger and Latin for sharp.
  • Type, It was part of the mosasaur family, a group of ocean predators that were related to snakes.
  • atives of today’s Komodo dragons and anacondas, Khinjaria acuta highlights the rich diversity of marine reptiles that once dominated the seas.

Ecological Role, As a top predator, it played a crucial role in the Late Cretaceous marine ecosystems, showcasing a variety of predatory strategies among mosasaurs.

An Unprecedented Discovery

The study, led by Dr. Nick Longrich from the University of Bath, analyzed skeletal remains discovered in a phosphate mine southeast of Casablanca. This collaborative research involved institutions across the globe, including the Marrakech Museum of Natural History, the Museum National d’ Histoire Naturelle in Paris, Southern Methodist University in Texas, and the University of the Basque Country in Bilbao. The findings underscore the incredible biodiversity of marine fauna that existed just before the mass extinction event that marked the end of the Cretaceous period.

A Window Into the Past

Reveals how complex and diverse ancient undersea worlds were, full of top hunters with unique ways to catch their food. These prehistoric times contrast with today’s oceans, which tend to be ruled by just a few at the top of the food chain. The study points out the huge shifts in the makeup of ecosystems since 66 million years ago. Back in the Cretaceous era, there was an impressive mix of big sea reptiles hunting large prey. Finding Khinjaria acuta gives us more insight into these longgone waters and their dominant creatures.

The Impact of the CretaceousPaleogene Extinction Event

The mass extinction event at the end of the Cretaceous period, set off by an asteroid hit, turned marine ecosystems upside down. Dinosaurs vanished along with many sea reptiles like mosasaurs and plesiosaurs, clearing the stage for mammals, birds, and other life forms to spread out and take over those empty spots in nature. The scientists guess that the diverse sea creatures from the Late Cretaceous, such as Khinjaria acuta, were part of unique ecosystems that were nothing like today’s world.


Finding Khinjaria acuta sheds light on the wide variety of life in the seas 66 million years ago. It also encourages more research into how these old ecosystems worked and changed over time. By looking at history, researchers aim to learn more about how marine life varies now and what it might look like later. Khinjaria acuta’s tale is an exciting part of Earth’s history, showing off nature’s complexity and its ability to survive through different ages.