Originally posted by lazs2 
Name one thing that we have ever run out of?
lazs 
 American Lion Panthera leo atrox, Western USA, 8000 BC. 
Ancient Bison Bison antiquus, USA, 8000 BC. 
Beringian cave lion Panthera leo vereshchagini, Alaska. 
Cuvieronius, Florida and Arizona, 400 AD 
Dire Wolf Canis dirus, USA, 8000 BC. 
Giant Beaver Castoroides ohioensis, Great Lakes region, 8000 BC. 
Giant hutia Elasmodontomys obliquus, Puerto Rico, 1000 BC. 
Giant Short-Faced Bear Arctodus simus, USA, 10500 BC. 
Glyptodon USA, 8000 BC. 
Helmeted Musk Ox Alaska, 9000 BC 
Pygmy Mammoth Mammuthus exilis, Channel Islands. 
Smilodon fatalis USA, 8000 BC. 
Woolly Mammoth Mammuthus primigenius, Northern USA, 2000 BC. 
Western Camel USA, 8000 BC. 
Yukon Wild bellybutton Equus asinus lambei, Alaska, 11000 BC. 
Antillean Cave Rat 
Insular Cave Rat 
Corozal Rat 
Columbian Mammoth Mammuthus columb, USA, 5800 BC. 
American cheetah USA 
Bison occidentalis USA 
Recent extinctions (1500 AD to present)
Puerto Rican Shrew Nesophontes edithae 
Puerto Rican Long-nosed Bat 
Puerto Rican Long-tongued Bat 
Guam Flying Fox Pteropus tokudae 
Lesser Puerto Rican Ground Sloth, 
Penasco Chipmunk 
Sherman's Pocket Gopher 
Goff's Pocket Gopher Geomys pinetis goffi 
Tacoma Pocket Gopher Thomomys mazama tacomensis 
Chadwick Beach Cottonmouth Mouse, 
Giant Deer Mouse 
Pallid Beach Mouse Peromyscus polionotus decoloratus 
Gull Island Vole Microtus pennsylvanicus nesophilus 
Louisiana Vole 
Puerto Rican Hutia 
Puerto Rican Paca 
Lesser Puerto Rican Agouti 
Greater Puerto Rican Agouti 
Southern California Kit Fox Vulpes macrotis macrotis 
Sea Mink Mustela macrodon 
Caribbean Monk Seal 
Steller's Sea Cow 
Badlands Bighorn Sheep 
Columbia Basin Pygmy Rabbit 
Arizona Wapiti 
Oregon Bison 
Eastern Woodland Bison 
Colorado Hog-nosed Skunk 
Big Thicket Hog-nosed Skunk 
Smith Island Cottontail 
Allen's Thirteen-lined Ground Squirrel 
Banks Island Wolf Canis lupus bernardi, 1920 
Cascade Mountains Wolf Canis lupus fuscus, 1940 
Antillean Giant Rice Rat 
Dwarf Hutia 
Birds
Prehistoric extinctions (begin Holocene to 1500 CE)
Law's Diving-goose, California, 1800 BC. 
Merriam's Teratorn, Southern USA, 8000 BC. 
Moa-nalo, Hawaii. 
O'ahu Petrel, Hawaii. 
Nēnē-nui, Hawaii. 
Pleistocenen Black Vulture, Western USA. 
Saint Croix Macaw, St. Croix, Virgin Islands. 
Giant Amakihi, Big Island, Hawaii 
Puerto Rican Obscure Bunting , Puerto Rico 
Stout-legged Finch, Kaua'i, Hawaii 
Kauaʻi Finch, Kaua'i and O'ahu, Hawaii 
Maui Nui Finch, Maui and Moloka'i, Hawaii 
Maui Finch, Maui, Hawaii 
Pila's Palila, Kaua'i, Hawaii - possibly survived until early 18th century 
Scissor-billed Koa-finch, Rhodacanthis forfex-prehistoric Kaua'i, and Maui, Hawaii 
Primitive Koa-finch, O'ahu and Maui, Hawaii 
Ouahu Grosbeak, O'ahu and Maui, Hawaii 
Recent extinctions (1500 AD to present)
Bering Canada Goose, 
Labrador Duck, 
Heath Hen, 
Spectacled Cormorant, 
Laysan Crake, 
Hawaiian Crake, 
Wake Island Rail, 
Virgin Islands Screech-Owl, 
Mauge's Parakeet, 
Carolina Parakeet, Conuropsis carolinensis 
Louisiana Parakeet, 
Passenger Pigeon, Ectopistes migratorius 
Laysan Millerbird, 
Great Auk, 
Guam Flycatcher, 
Lanai Thrush, 
Hawaiian Thrush, 
Oahu Thrush, 
Molokai Thrush, 
Dusky Seaside Sparrow, 
Kona Grosbeak, 
Greater Koa-Finch, 
Lesser Koa-Finch, 
Oahu 'Akialoa, 
Maui Nui 'Akialoa, 
Kauai 'Akialoa, 
Kioea, 
Ula-'ai-hawane, 
Black Mamo, 
Hawai'i Mamo, 
Lana'i Hookbill, 
Oahu Nukupu'u, 
Greater 'Amakihi, 
Laysan Honeycreeper, 
Oahu 'Akepa, 
Molokai Creeper, 
Lana'i Creeper, 
O‘ahu ‘Ō‘ō, 
Moloka‘i ‘Ō‘ō, 
Kaua'i 'Ō'ō, 
Hawai'i 'Ō'ō, 
Guadeloupe Burrowing Owl, Speotyto cunicularia guadeloupensis 
Guadeloupe Parakeet, Aratinga labati (18th Century) 
Guadeloupe Parrot, Amazona violacea (1779) 
Lesser Antillean Macaw, Ara guadeloupensis (1760) 
Martinique House Wren, Troglodytes aedon martinicensis 
Martinique Parrot, Amazona martinicana (1779) 
Imperial Wooddonut, Campephilus imperialis 
Slender-billed Grackle, Quiscalus palustris 
Possibly Extinct
Bachman's Warbler, 
Eskimo Curlew, 
Ivory-billed Wooddonut 
Reptiles
Prehistoric extinctions (Holocene to 1500AD)
Mona Tortoise, 
Modern extinctions (1500 AD to present)
Navassa Curly-tailed Lizard, 
Navassa Iguana, 
Navassa Island Dwarf Boa, 
Sulcate Blind Snake, 
Saint Croix Racer, 
Martinique Giant Ameiva, Ameiva major 
Martinique Lizard, Leiocephalus herminieri (1830s) 
Ameiva cineracea (early 20th Century, Guadeloupe) 
Possibly Extinct
Culebra Island Giant Anole, 
Amphibians
Vegas Valley Leopard Frog, 
Catahoula Salamander, 
Golden Toad, Costa Rica 
Possibly Extinct
Golden Coqui, 
Mottled Coquí 
Web-footed Coquí, 
Fish
Longjaw Cisco, 
Deepwater Cisco, 
Lake Ontario Kiyi, 
Blackfin Cisco, 
Yellowfin Cutthroat Trout, 
Alvord Cutthroat Trout, 
Silver Trout, 
Maravillas Red Shiner, 
Independence Valley Tui Chub, 
Thicktail Chub, 
Pahranagat Spinedace, 
Phantom Shiner, 
Las Vegas Dace, 
Grass Valley Speckled Dace, 
Clear Lake Splittail, 
Snake River Sucker, 
Harelip Sucker, 
Tecopa Pupfish, 
Shoshone Pupfish, 
Raycraft Ranch Killifish, 
Pahrump Ranch Killifish, 
Ash Meadows Killifish, 
Amistad Gambusia, 
San Marcos Gambusia, 
Blue Walleye, 
Maryland darter, 
Utah Lake Sculpin 
Possibly Extinct
Shortnose Cisco 
Crustaceans
Illinois Cave Amphipod, 
Pasadena Freshwater Shrimp 
Insects
Pecatonica River Mayfly, 
Robert's Stonefly, 
Fort Ross Weevil, 
Mono Lake Diving Beetle, 
Xerces Blue, 
Palos Verdes Blue (Glaucopsyche lygdamus palosverdesensis) 
Poko Noctuid Moth, 
Midway Noctuid Moth, 
Kerr's Noctuid Moth, 
Laysan Noctuid Moth, 
Noctuid Moth, 
Procellaris Noctuid Noth, 
Chestnut Ermine Moth, 
American Chestnut Moth, 
Phleophaga Chestnut Moth, 
Central Valley Grasshopper, 
Rocky Mountain Locust, 
Antioch Dunes Shieldback Katydid, 
Kona Giant Looper Moth, 
Arachnids
Caribbean Monk Seal Nasal Mite, 
Nevada Water Mite, 
Passenger Pigeon Mite, 
Mollusks
Coosa elktoe, 
Carolina elktoe, 
Ochlockonee arcmussel, 
Recovery pearly mussel, 
Arc-form pearly mussel, 
Acorn pearly mussel, 
Lewis pearly mussel, 
Nearby pearly mussel, 
Sampson's pearly mussel, 
Steward's pearly mussel, 
Turgid-blossom pearly mussel, 
Shoal sprite, 
Cahaba pebblesnail, 
Umbilicate pebblesnail, 
Mount Matafao different snail, 
Short-spired elimia, 
Closed elimia, 
Fusiform elimia, 
High-spired elimia, 
Constricted elimia, 
Hearty elimia, 
Ribbed elimia, 
Rough-lined elimia, 
Pupa elimia, 
Pygmy elimia, 
Cobble elimia, 
Puzzle elimia, 
Excised slitshell, 
Striate slitshell, 
Pagoda slitshell, 
Ribbed slitshell, 
Pyramid slitshell, 
Round slitshell, 
Lined pocketbook, 
Eelgrass limpet
Oh, I'm sorry. You said just one.