Fossil Spirifer

Fossil Spirifer Dove Stone, Swallow StoneShi Yan  石燕 (‘Swallow Stone’, TCM)Byi ‘u mgo  བྱི་འུ་ མགོ་ (‘Small Bird Head’, Tibetan Medicine) Fossilve Spirifer (Adam, Chengdu Medicine Market, 2016) Zoological name: Devonian fossil brachiopods including Spirifer disjunctus Parts used: Prepared Fossil Temperature & Taste: Cool, dry. Salty, slightly Sweet Constituents: Mainly calcium carbonate, silicon dioxide, small amount…