Petroleum County, MT
County4,399 species observed across 8 groups · Pop. 499
Ecoregions
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Species observed
Birds· 334 species
Mammals· 72 species
Plants· 1,595 species
Reptiles & Amphibians· 33 species
Fish· 57 species
Insects· 2,050 species
Other Invertebrates· 208 species
Fungi & Lichens
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Part of
StateMontanaPop. 1.1M