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The discovery of fossils in Morocco helps build hypotheses about dinosaurs during the Cretaceous period, today, Sunday, February 18, 2024 07:58 pm
The discovery of new “Abelisaurus” fossils in Morocco has provided evidence that can help reconstruct hypotheses about dinosaurs during the Cretaceous Period, which occurred between 145 and 66 million years ago, according to the Spanish newspaper 20 Mintos.
According to the newspaper, “The fossils were found at the bottom of an ancient sea and date back to the last million years of the dinosaurs’ lives, when a large part of the African continent was submerged under the seas.”
Among the fish bones, scales, shark teeth and marine reptiles, researchers also found land dinosaur bones.
Paleontology and evolutionary biology
Nicholas Longrich, senior lecturer in palaeontology and evolutionary biology at the University of Bath, said it was “unclear” how these fossils ended up in marine sediments.
He added, “It is possible that dinosaurs swam to the islands in search of food, as deer and elephants do today, and others may have drowned or been swept into the sea by floods or storms, or drowned in rivers that carried them to the ocean.”
The newspaper pointed out that by studying the seabed and the dinosaur fossils that were found, researchers were able to form a picture of what the last dinosaurs in Africa looked like.
The species found also showed great diversity, from “titanosaur sauropods” to elephant-sized long-necked herbivores.
African dinosaur fossils
Among the fossils is the main predator, Chenanisaurus barbaricus, a 10-metre-long carnivore with a short snout and short arms that was part of the abelisauridae.
After the discovery of these diverse animals, paleontologist Longrich suggested that the decline in dinosaur diversity discovered in North America could be a local phenomenon, not a global one.
African dinosaur fossils indicate that dinosaurs flourished, and even diversified, at low latitudes.
This would support the theory that the extinction of these large reptiles was sudden, according to the expert, indicating that “dinosaurs were exterminated in their prime” and did not disappear gradually due to a decline in their diversity.
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