Scientists found fossils of a pregnant frog, which is more than 100 million years old

Scientists have found the remains of a pregnant frog, which is more than 100 million years old

Photo: Proceedings of the Royal Society B: Biological Sciences

an ancient frog with a belly full of eggs.

A fossilized frog with a belly full of eggs found in China is the oldest of its kind, researchers believe.

A group of scientists in China unearthed an ancient frog with a belly full of eggs. This is reported by Phys.

According to the researchers, it comes from the Lower or Early Cretaceous, indicating that the frog lived about 100 million years ago, during the time of the dinosaurs.

After scanning the fossil with the help of a computer tomography, the scientists found that the frog belonged to the species Gansubatrachus qilianensis and was not fully mature. However, she was fully capable of reproduction and had a belly full of eggs arranged in columns, probably in the oviduct. Another cluster of eggs was probably in the ovary. This arrangement repeats the reproductive process of modern frogs, in which eggs pass through paired oviducts.

The researchers ruled out old age as the cause of the frog's death. They also suggest that the frog did not die from problems in the water source, such as a sudden algal bloom. And the fact that several other frogs survived in the area rules out the possibility of another environmental problem.

Scientists suggest that the most likely cause of the frog's death was strangulation by the male or weakness caused by active mating.

Previous research has shown that to ensure fertilization of the female's eggs, males use an amplexus – a place where they hug the female to prevent her from moving.

Modern male frogs are known to remain in amplexus for hours and sometimes days, enough time for the female to die of exhaustion or suffocation.

Proceedings of the Royal Society B: Biological Sciences

It was previously reported that in Argentina, almost 96% of the baby southern elephant seals died due to the H5N1 bird flu strain.

The world's largest frog was found in Australia

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