Posted: 02 Dec 2017 08:09 PM PST
Archaeologists have unearthed hundreds of fossilized pterosaur eggs in northwestern China. The number is unprecedented — 215 eggs — but even more significant from a paleontological perspective is the discovery of 16 unsquashed, still perfectly 3D embryos among them. Before this, only six other well-preserved pterosaur eggs had been found and none of them had 3D embryos inside. Frozen in time at various stages of development, the embryos have to potential to reveal a great deal we don’t know about the creatures, their lives and behaviors. The team saw what a treasure they had when they CT-scanned the eggs.
The discoveries weren’t made all at once. They are the result of a decade of excavations between 2006 and 2016 at a site in the Turpan-Hami Basin of the Xinjiang Uygur Autonomous Region. Fossils of bones from hundreds of adult male and female pterosaurs (Hamipterus tianshanensis) and babies and young pterosaurs were found in the same location at the collection of eggs all 215 of which were excavated from a single sandstone block.
Pterosaur were toothed flying reptiles who lived on land near bodies of water and fed largely on fish. Their long beaks were filled with pointy teeth and they had a properly intimidating 13-foot wingspan. When they occupied the Turpan-Hami Basin site 120 million years ago in the Lower Cretaceous, there was a large lake which no longer exists. Because of the spectacular finds, scientists refer to the area as “Pterosaur Eden” although it definitely wasn’t one girl-one guy and the eggs appear to have been banished from terrestrial paradise by flash floods.
The findings have been published in the latest issue of the journal Science (requires subscription or payment to read).
|You are subscribed to email updates from The History Blog. |
To stop receiving these emails, you may unsubscribe now.
|Email delivery powered by Google|
|Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States|