Jurassic Dinos editorial · Updated · Source-based review
Meet a Middle Jurassic stegosaur
Adratiklit was a plant-eating armoured dinosaur from what is now Morocco. It lived during the Middle Jurassic, long before the end-Cretaceous extinction. Its discovery helped fill a large gap in the record of stegosaurs in northern Africa. The name combines Berber words for mountain and lizard, linking the animal to its place of discovery.
The species Adratiklit boulahfa was announced in 2019 by Susannah Maidment and colleagues. The Natural History Museum described material from the Middle Atlas Mountains, including vertebrae and an upper-arm bone. These were valuable clues, but not a complete plated animal lying in the rock.
How did researchers recognise it?
A vertebra is one of the bones making up the backbone. Its ridges, projections and joint surfaces can contain differences that survive even when more eye-catching parts are absent. Comparing these details helped researchers identify Adratiklit as a stegosaur.
That matters because we often recognise stegosaurs by their back plates. Fossil identification need not begin with the feature that appears most clearly in a picture. It begins with whichever structures were actually preserved and can be compared reliably.
Why did the discovery change the map?
The original study examined the scarcity of armoured dinosaurs in Gondwana, the ancient southern landmass that included Africa. A sparse fossil record can have several causes. Suitable rocks may be missing or hidden; fossils may not have survived; or particular regions may have received less collecting effort.
The authors found evidence that geological and human collecting factors affected the record. In other words, few discoveries do not automatically mean few living animals. Adratiklit supplied a new northern African data point and encouraged closer examination of an incompletely sampled region.
Was it the oldest stegosaur?
The museum’s 2019 announcement described it as the oldest definite stegosaur then known. That is a dated research claim, not a permanent title. New discoveries and revised rock ages can change such comparisons. Its enduring importance is that it documents an early part of stegosaur history in a region that was poorly understood.
What is known about its armour and food?
A plant-eating diet is inferred from its place among stegosaurs. The reviewed fossils do not reveal a favourite plant or a complete arrangement of plates and spikes. Our illustration follows Connor Ashbridge’s complete Adratiklit restoration, including its narrow plates and spiny tail. Those details are the source artist’s reconstruction, not an armour pattern preserved on a complete fossil.
To compare other armoured dinosaurs, read about Stegosaurus and Kentrosaurus, or browse dinosaur names beginning with A.
Quick answers
- Where was Adratiklit found?
- In the Middle Atlas region of Morocco.
- When did it live?
- During the Middle Jurassic. The museum announcement places it around 168 million years ago; this is an approximate age.
- Was a complete plated skeleton found?
- No. The announced material includes vertebrae and an upper-arm bone, not a complete body with its armour arrangement.
- Is it still the oldest stegosaur?
- The 2019 announcement made that claim for the evidence then available. This page does not treat it as a permanent current record.
