http://www.bbc.co.uk/news/science-environment-12242596Fossil female pterosaur found with preserved egg
It was the males which carried a crest, the latest research published in Science magazine suggests
For fossil hunters, it represents one of those breakthrough moments. A pterosaur has been found in China beautifully preserved with an egg. The egg indicates this ancient flying reptile was a female, and that realisation has allowed researchers to sex these creatures for the first time.
Writing in Science magazine, the palaeontologists make some broad statements about gender differences in pterosaurs, including the observation that only males sported a head-crest. [...]
The Western Hemisphere. General term for the Americas following their discovery by Europeans, thus setting them in contradistinction to the Old World of Africa, Europe, and Asia.
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