Chinese scientists discovered for the first time 390 million years ago, armor -Oriental Fish

Author:Sichuan Observation Time:2022.07.11

Recently, the scientific research team of the Institute of Ancient vertebrates and the Ancient Human Research Institute of the Chinese Academy of Sciences in the northeast of Chuxiong and Yi Autonomous Prefecture in Yunnan (about 390 million years ago) Haikou Group found a multi -gill fish fossil -Oriental Fish, which represents so far So far, the number of armor with the largest number of gill sacs can reach up to 45 pairs of gill sacs, which is more than 7 times that of the most primitive armor of the Zhiji period. This achievement was published in the academic journal "Pelvlaeburium" a few days ago.

Oriental fish ecological restoration map

Having the most gill sac in history, it may be the secret weapon of the surviving oriental fish.

Armor turtle is a high -diversity and has a strong jaw -free category. There are currently 66 species of 90 species, which are only found in China and northern Vietnam. Oriental fish belongs to the system classification of the armor of the armor of the armor.

Oriental fish fossil photos and recovery pictures

The number of gill sacs of armor fishes has increased, which has always been an evolutionary phenomenon that is difficult to explain. The new discovery shows that the evolutionary response of armor in the ocean hypoxia that has repeatedly occurred in early mud pelvis may be The secret of the mud pelvic world.

Fossil photos of Oriental Fish and Wide Turtle

The new discovery is not only the first report of the fossils of the mud pelvic fossils in the middle of the Yunnan Province. The period (about 410 million years ago) expanded to the Mud Pen Pen Shi Eiffel period (about 390 million years ago), which continued for about 20 million years back. Geological blank also increases our understanding of the radiation evolution and diffusion and migration routes of armor in the mud basin. important meaning.