The oldest true armored fish is 438 million years old

  Who is the oldest known true armored fish in the world? Where are they? How old is it?
  The Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences (Institute of Paleoanthropology, Chinese Academy of Sciences) released a latest fossil discovery and research on March 30 and gave the answer: the research team of the institute first discovered a Silurian stratum in Wuning County, Jiangxi Province Two new genus fossils of early genus genus, named “Junqing Qingshui fish” and “Anji hedgehog”, dated to about 438 million years ago, representing the oldest and most primitive fossil record of true armored fish so far.
  This important achievement of ancient fish research was completed by Shan Xianren, a master student of the Institute of Paleo-Spine of the Chinese Academy of Sciences under the joint guidance of researchers Gai Zhikun and Zhao Wenjin. The result paper was recently published online in the international academic journal “Asian Geoscience”. The related research further clarified the early stage The phylogenetic relationship between the eutherian fishes enriches the academia’s understanding of the early evolution and radiation of the armored fish subclass, and also provides a basis for the division and comparison of the Silurian marine red layers in Zhejiang and Jiangxi, as well as the determination of the age, and the and Estimates of the divergence time of polygills provide key fossil evidence.

American scientists have developed a new ultrasound therapy that uses lower amplitude, higher frequency ultrasound waves to break up kidney stones within 10 minutes. This therapy promises to deliver stones into the urine faster and less painfully without surgery.
  Kidney stones form when waste products in the blood build up in the kidneys. Some people with kidney stones may experience no discomfort, but if the stone gets stuck in the kidney or ureter, it can cause severe abdominal pain.
  Doctors generally use shock wave lithotripsy (SWL) to treat relatively small kidney stones. During treatment, high-amplitude, low-frequency ultrasound is delivered to the stone for up to an hour. This will break up the stone, making it easier to pass into the urine, but larger stones may also require surgery to remove. Additionally, during this procedure, the doctor will prescribe medication to keep the patient calm.
  Now, Jonathan Harper and colleagues at the University of Washington have developed a less painful method that also uses ultrasound, but with lower amplitude and higher frequency. They dubbed this latest method “Blast Wave Lithotripsy” (BWL).
  In the first-in-human trial, 19 participants with kidney stones received BWL for a total of 25 kidney stones. Within 10 minutes, about 90 percent of the stones were broken up—from 12 millimeters to less than 2 millimeters. In SWL, about 60% of the stones are broken down to less than 4 mm, and can usually be excreted, but the process is much more painful than smaller stones.

  Recently, a new study by Iowa State University scientist Angelique Brerentin and others found that push-ups are more helpful for sleep than running.
  An extra 17 minutes of sleep may seem like a small amount, but it can be a lot, depending on the individual. For people who have trouble falling asleep or who wake up multiple times in the early morning, getting extra sleep each night can be very beneficial.
  Lifting weights or doing push-ups can provide 17 minutes of extra sleep, according to the study. For people with sleep problems, this type of exercise seems to be better than jogging or cycling.
  The study looked at 386 overweight or obese people between the ages of 35 and 70 who lived sedentary lives and had relatively high blood pressure.
  The researchers observed that among those who slept less than seven hours per night, those who ran, biked or stepped on the elliptical got an average of 23 minutes of extra sleep per night. And those who did strength training got up to 40 minutes of extra sleep.

  The vast majority of owls living in modern times are silent-flying nocturnal birds of prey. What people may not know, however, is that a few species of owl are more adapted to day hunting and are more active during the day. However, the evolutionary history of these diurnal owls has been largely hidden due to the paucity of fossil evidence.
  On March 28, researchers from the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences published a paper in the Proceedings of the National Academy of Sciences, describing a diurnal owl fossil found on the northeastern margin of the Qinghai-Tibet Plateau. This extinct ancient species lived at the end of the Miocene about 9.5 million to 6 million years ago. This is the first owl fossil found in China for the first time.
  This specimen is more closely related to the northern eagle owl. The researchers conducted a detailed statistical analysis and comparison of the scleral ossicles from this fossil owl with the scleral bone and orbital size of 55 reptiles and more than 360 birds, including many species of owls. It turned out that the extinct owl’s eyes were less open to light, which greatly reduced the amount of sunlight that penetrated, allowing them to see clearly at noon.
  The study also conducted a larger-scale statistical analysis using data from more than 360 species in the Bird Diversity Database to characterize the evolution of life habits (diurnal, nocturnal, or morning-evening travel) stochastic feature mapping and ancestral state reconstruction. The results showed that the activity pattern of the ancestors of extant owls was almost nocturnal, but the ancestors of Mammoth owls, including Owls and the new Mammoth, were “day walkers”. After adding the data of China-Singapore mammoth owls, the probability of diurnal behavior of mammoth owls is close to 100%.

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