Long gu
| Long gu | |||||||||||||||||||||||
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 lónggǔ written in seal script | |||||||||||||||||||||||
| Chinese name | |||||||||||||||||||||||
| Traditional Chinese | 龍骨 | ||||||||||||||||||||||
| Simplified Chinese | 龙骨 | ||||||||||||||||||||||
| Literal meaning | dragon bones | ||||||||||||||||||||||
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| Japanese name | |||||||||||||||||||||||
| Kanji | 竜骨 | ||||||||||||||||||||||
| Kana | りゅうこつ | ||||||||||||||||||||||
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| Latin name | |||||||||||||||||||||||
| Latin | os draconis | ||||||||||||||||||||||
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Long gu or longgu (Chinese: 龙骨; pinyin: lónggǔ), literally translated as dragon bones (also referred to as os draconis or fossilia ossis mastodi), are remains of ancient life (such as fossils) prescribed for a variety of ailments in Chinese medicine and herbalism. They were historically believed, and are traditionally considered, to be the remains of dragons.