Prehistoric offspring help reveal the early life of flying reptiles – tech2.org

Prehistoric offspring help reveal the early life of flying reptiles



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<p><span clbad= P Aletologists previously believed that this long-snouted species was more intellectually mature than other prehistoric leaflets, but the conclusions, published on Thursday in Science, suggest Newborn pterosaurs were underdeveloped at birth and needed more parental attention than previously thought.This clbad existed during the geologic period of the Lower Cretaceous, between 145 million years ago and 100 million years ago.

The latest invention in Northwest China of hundreds of fossilized pterosaur eggs gives new insight into the flying reptiles that lived next to the dinosaurs, including a sign that their babies were born without flying and needed parental care.A treasure of 215 eggs reveals how the winged reptiles called pterosaurs evolved in childhood and how their parents cared for these children Ebien born.

Such a large collection of old eggs is a rare find. In recent years, pala The deontologists discovered five eggs from China and one egg from Argentina. Usually, a "clutch size" the number of eggs put together comes in two. So, why did they find 215 eggs in one place?

  Illustration of a Pterosaur and Pterosaur eggs by Zhao Chuang
Illustration of a Pterosaur and Pterosaur eggs by Zhao Chuang

Researchers believe that a tornado could have hit a large group of pterosaur nests hidden in the mud and washed them in a lake. This is the reason why researchers found eggs in sandstone sediments. But even without this storm, it seems that the pterosaurs lived in large numbers in this area.

The eggs, although they remained that long, are weak. To look inside without inducing damage, the team used tomography and found that 16 of the eggs still had remains of their fetuses. Each embryo varied in its growth stage, but all eggs had well developed thigh bones and underdeveloped pectoral muscles. A fetus, which the team called the most mature, had partially developed skull wings and bones, as well as the entire lower jaw.

Faced with this abundance of pterosaur samples, paleontologists questioned how these prehistoric creatures combined. Therefore, seeing, for the first time, a large nesting colony generates some exciting ideas. Could they raise their young together? Does it mean that the pterosaurs were social and nourished approaching each other? The team wants to use these eggs, and any other they discover, to learn even more about pterosaur breeding and community life.

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