New material of the 410-million-year-old Pterogonaspis yuhaii from Qujing City, southwest China's Yunnan Province, reveals the morphology of the ventral side of the headshield for the first time.
Life restoration of Pterogonaspis yuhaii. (Photo provided to China News Service)
Photograph of Pterogonaspis yuhaii (Photo provided to China News Service)
Photograph of Pterogonaspis yuhaii (Photo provided to China News Service)
Restoration of Pterogonaspis yuhaii (Photo provided to China News Service)
File photo taken in 2018 shows scientists work at the excavation site in Qujing City, southwest China's Yunnan Province. (Photo provided to China News Service)
The fish, called Sparalepis tingi, is about 20 centimeters long, and has unusual scales like a suit of armor. It shows that the earth may have entered the "Age of Fishes" in the latter part of the Silurian Period (443.7 - 419.2 million years ago), instead of the popularly accepted Devonian Period (419.2 - 358.9 million years ago).
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