Features

Published: Monday August 18, 2014 MYT 8:45:00 PM
Updated: Monday August 18, 2014 MYT 7:26:23 AM

Check out this ancient flying reptile’s epic headgear!

A flying reptile whose head was topped with a big bony crest shaped like the sail of a yacht swooped through the skies over Brazil roughly 90 million years ago.

Scientists announced on Aug 13 the remarkable discovery of about 50 fossilised skeletons of a creature called Caiuajara dobruskii, a type of flying reptile known as a pterosaur that lived alongside the dinosaurs, at a site in southern Brazil.

These pterosaurs – whose wingspans measured up to 2.35m – inhabited a lakeside oasis in a large desert region during the Cretaceous Period, living in vibrant colonies with others of the same species of all ages, they said.

“This helps us to have a glimpse on the anatomical variation achieved by this species from young to old,” said Alexander Kellner, a palaeontologist with Brazil’s National Museum at the Federal University of Rio de Janeiro, who led the study.

Crests to die for: Way before the advent of beehives and mohawks, this pterosaur species called Caiuajara dobruskii rocked their impressive crests like no other flying creature since. The artistic impression above shows three individuals in different stages of growth. – Reuters

Many pterosaurs, especially the later ones, boasted elaborate and sometimes large head crests. Caiuajara’s head was topped with a big triangular crest that looked like “a bony sail,” according to Kellner. “It looks bizarre,” he said.

There is no indication that the crest was limited to either males or females, but it appears to have become ever larger relative to the rest of the body as the pterosaur matured. “The size of the crest was small in young animals and very large in older ones,” Kellner added.

Flight pioneers

Pterosaurs were Earth’s first flying vertebrates, with birds and bats making their appearances much later. They thrived from about 220 million years ago to 65 million years ago, when they were wiped out by the asteroid that also doomed the dinosaurs.

The researchers described 47 skeletons in their study published in the scientific journal PLOS ONE and said they have identified 10 more not described in the paper. They said this species lived about 80 to 90 million years ago. Caiuajara was toothless and most likely a fruit eater, Kellner said. The skeletons of the juveniles strongly suggested they could fly at a very young age, Kellner added.

Knowledge about pterosaurs has been spotty, with their fragile skeletons not lending themselves well to fossilisation. The sheer number of Caiuajara individuals discovered and their variety of ages have made it one of the best understood pterosaurs ever found, the researchers said.

A reconstruction of Caiujuara's huge crest from fossilised fragments – the entire head is outlined as a grey silhouette, with the crest on top and bony beak-like jaw at the bottom.

Chinese scientists in June said they had unearthed no fewer than 40 adult individuals of another newly identified pterosaur species as well as five pterosaur eggs – very rare indeed – preserved beautifully in three dimensions.

No eggs of Caiuajara have been found at the site in Brazil. “Not yet. But one is allowed to dream, correct?” said Kellner. – Reuters

Tags / Keywords: Lifestyle, Features, Science, Palaeontology, Brazil, study, finding, research, PLOS ONE, pterosaur, Caiujuara dobruskii, flying reptile, huge crest

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