“Unio douglasiae” by D. C. Graham is a public-domain (CC0) artwork, free to view, download and reuse for any purpose. It is catalogued from the open collection of Smithsonian Open Access.

Unio douglasiae

D. C. Graham

Title	Unio douglasiae
Artist	D. C. Graham
Medium	Dry
Origin	Mount Amei, Sichuan, China
Holding institution	Smithsonian Open Access
Rights	Public domain (CC0)

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Updated 2026-09-06