For future reference, here is a (hopefully) complete list of Nevada State Symbols, Emblems, and other official features:

Nevada State Animal: Desert Bighorn Sheep (a.k.a. Nelson Sheep) (Ovis canadensis nelsoni)
Nevada State Bird: Mountain Bluebird (Sialia currucoides)
Nevada State Fish: Lahontan Cutthroat Trout (Salmo clarki henshawi)
Nevada State Reptile: Desert Tortoise (Gopherus agassizii)
Nevada State Fossil: Ichthyosaur (Shonisaurus)
Nevada State Tree (1): Single-Leaf Pinion (Piñon) Pine (Pinus monophylla)
Nevada State Tree (2): Bristlecone Pine (Pinus aristata var. longaeva)
Nevada State Christmas Tree: the now 95' tall Colorado Blue Spruce fir tree planted in the Capitol square in Carson City back in 1876 by George W. G. Ferris, Sr.
Nevada State Flower: Sagebrush (Artemisia tridentata or Artemisia trifida)
Nevada State Metal: Silver (Ag)
Nevada State Gem: (Virgin Valley) Black Fire Opal
Nevada State Semi-Precious Gemstone (mineral): Turquoise
Nevada State Rock: Sandstone (a.k.a. Quartzite)
Nevada State Flag: click here to view
Nevada State Seal: click here to view
Nevada State Artifact: Tule Duck Decoy
Nevada State Grass: Indian Ricegrass (Oryzopsis hymenoides)
Nevada State Colors: (Cobalt) Blue and Silver (sometimes mistakenly called 'Gray')
Nevada State Song: "Home Means Nevada"
Nevada State Slogan: "Battle Born"
Nevada State Motto: "All For Our Country"
Nevada State Tartan: click here to view
Nevada State Soil: Orovada Series Soil
Nevada State March: "Silver State Fanfare"
Nevada State Holiday: Nevada Day (October 31)
Nevada State Nicknames: Battle-Born State, Sagebrush State, Silver State

For more information:
http://dmla.clan.lib.nv.us/docs/nsla/services/nvfacts.htm
http://dmla.clan.lib.nv.us/docs/nsla/services/nvflags.htm
http://www.leg.state.nv.us/General/FACTS.cfm
http://www.washoe.lib.nv.us/mod.php?mod=userpage&page_id=111
http://www.nevada.com/facts.html
http://firstlady.state.nv.us/NevadaStateSymbols.htm
http://firstlady.state.nv.us/NevadaSymbols.htm
http://www.leg.state.nv.us/71st/bills/sb/sb347.html
http://leg.state.nv.us/NRS/NRS-235.html