G. nigra may refer to:
- Geochelone nigra, the largest living tortoise species, native to seven islands of the Galápagos archipelago
- Gila nigra, the headwater chub, a fish species found in Arizona and New Mexico
Synonyms edit
- Gymnadenia nigra, a synonym for Nigritella nigra, an orchid species found in Europe and Israel
See also edit
This disambiguation page lists articles associated with the same abbreviated species scientific name.
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