The keel in traditional Chinese medicine is not a dinosaur bone, so it is wrong to say that the keel in traditional Chinese medicine is a dinosaur bone. Through the modern scientific research on the authentic producing areas of the keel, it is found that the traditional Chinese medicine keel actually refers to the bone fossils of ancient mammals such as three-toed horses, rhinoceroses, deer, cattle and elephants or the fossils of elephant incisors.

Chinese medicine keel is produced in Miocene tertiary sedimentary rocks such as argillaceous rocks, siltstones and quaternary sediments from about 24 million to 5.2 million years ago.

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The keel was first seen in Shennong Herbal Classic, which was listed as the top grade. Sweet, astringent, flat, non-toxic, enters the heart, liver, kidney and large intestine. The main confidant is a ghost, a fine thing and an old charm, and he coughs. Diarrhea, purulent blood, female leakage, abdominal mass, infantile febrile convulsion. The astringency can be removed, the keel enters the liver to gather the soul, and the qi floating over is converged. It treats cough, diarrhea, purulent blood, female leakage, and astringency to consolidate qi and blood. Although its nature is astringent, it can enter the liver to break the knot.

In the prescription, keel refers to raw keel, which is washed, dried and crushed into medicine. It tends to calm the liver and suppress yang, calming the nerves. The calcined keel is a clean keel, and it is calcined red without fireworks, taken down to be cooled, and crushed into medicine. Inclined to astringent. Keels are often used to treat insomnia, dreaminess, nocturnal emission, calming the mind and so on.

People's Network-Chinese medicine keel is a fossil