Planorbidae snails, the intermediate host for the trematode parasite of the Schistosoma genus, which is responsible for schistosomiasis (bilharzia), a disease that affects both humans and cattle. Phot...

Planorbidae snails, the intermediate host for the trematode parasite of the Schistosoma genus, which is responsible for schistosomiasis (bilharzia), a disease that affects both humans and cattle. Phot...

Planorbidae snails, the intermediate host for the trematode parasite of the Schistosoma genus, which is responsible for schistosomiasis (bilharzia), a disease that affects both humans and cattle. Phot...

Cows feeding in a cattle shed at a wheat research institute.

Cows feeding in a cattle shed at a wheat research institute.

Mr Ashutosh, a member of staff at a wheat research institute, hugs one of the facility's cows in a cattle shed.

Mr Ashutosh, a member of staff at a wheat research institute, hugs one of the facility's cows in a cattle shed.

Mr Ashutosh, a member of staff at a wheat research institute, hugs one of the facility's cows in a cattle shed.

A worker weeding plots in a green house at a wheat research institute.

Dr Ratan Tiwari, a scientist at a wheat research institute, standing inside a green house.

Dr Ratan Tiwari, a scientist at a wheat research institute, standing inside a green house.

Secondary school pupils learning about the lake during one of their weekly excursions.

Albany Cycad (Encephalartos latifrons), FMNH 1169527. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

American Burying Beetle (Nicrophorus americans), FMNH INS-76245. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Sloane's Urania (Urania sloanus), FMNH INS-819072. Conservation status: extinct. Field Museum of Natural History, Chicago.

Snail Darter (Percina tanasi), FMNH no. 94489. Field Museum of Natural History, Chicago.

Southern White Rhinoceros (Ceratotherium simum simum), FMNH 125413. Conservation status: near threatened. Field Museum of Natural History, Chicago.

Spengler's Freshwater Mussel (Margaritifera auriculario), FMNH 143001. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Spotted Darter (Etheostoma maculatum), FMNH no. 1838. Field Museum of Natural History, Chicago.

Thylacine (Thylacinus cynocephalus), FMNH 81522. Conservation status: extinct. Field Museum of Natural History, Chicago.

Polyodon spathula, American Paddlefish, FMNH no. 98248. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Arcuate Pearly Mussel (Epioblasma flexuosa), FMNH 23038. Conservation status: extinct. Field Museum of Natural History, Chicago.

Asian Elephant specimens in cabinet (Elephas maximus). Field Museum of Natural History, Chicago.

Asian Elephant specimens in cabinet (Elephas maximus), FMNH 60601. Conservation status: endangered. Field Museum of Natural History, Chicago.

Elimia laete (formerly Goniobasis laete), FMNH 34196 (left); Tulotoma Snail (Tulotoma magnifica), FMNH 79380 (middle); Gyrotoma pyramidatum, FMNH 56196 (right). Field Museum of Natural History, Chica...

Western Bumble Bee (Bombus occidentalis), FMNH INS-3007334. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Whooping Crane (Grus americana). Conservation status: endangered. Field Museum of Natural History, Chicago.

Xerces Blue (Glaucopsyche xerces), FMNH 474. Conservation status: extinct. Field Museum of Natural History, Chicago.

Passenger Pigeon (Ectopistes migratorius) eggs at the Field Museum of Natural History, Chicago. Conservation status: extinct.

Atala or Coontie Hairstreak (Eumaeus atala). Field Museum of Natural History, Chicago.

Atitlan Grebe (Podilymbus gigas), Field Museum of Natural History, Chicago. No. 97557. Conservation status: extinct. The Atitlan grebe, also known as the poc, was a large, flightless water bird endem...

Giant Armadillo (Priodontes giganteus), FMNH 60450. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Golden Lion Tamarin (Leontopithecus rosalia), FMNH 60654. Conservation status: endangered. Field Museum of Natural History, Chicago.

Golden Snub-nosed Monkey (Rhinopithecus roxellana), FMNH 31144. Conservation status: endangered. Specimen collected by Teddy Roosavelt. Field Museum of Natural History, Chicago.

Passenger Pigeon (Ectopistes migratorius). Field Museum of Natural History, Chicago. Conservation status: extinct.

Hawaiian tree snails, various species (Achatinella genus) and Carelia pilsbryi. Conservation status of all: extinct. Field Museum of Natural History, Chicago.

Dermatemys mawii, Central American River Turtle, FMNH catalogue no. 98950. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Banded Trinity (Thismia americana), FMNH 427103. Conservation status: extinct. Field Museum of Natural History, Chicago.

Golden Toad (Bufo periglenes), FMNH nos. 167967-69, paratypes. Conservation status: extinct (Bufo periglenes), FMNH nos. 167967-69, paratypes. Conservation status: extinct. Field Museum of Natural His...

Goliath Frog (Conraua goliath), FMNH no. 15979. Conservation status: endangered. Field Museum of Natural History, Chicago.

'I'iwi or the Scarlet Hawaiian Honeycreeper (Vestiaria coccinea), FMNH 308798. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Ivory-billed Woodpecker (Campephilus principalis)., FMNH 39502. Conservation status: extinct. Field Museum of Natural History, Chicago.

Hawksbill Turtle (Eretmochelys imbricata), FMNH no. 31009. Field Museum of Natural History, Chicago. Conservation status: critically endangered.

Leatherback Turtle (Dermochelys coriacea), FMNH 58. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Conraua goliath, Goliath Frog, FMNH no. 248830. Conservation status: endangered. Field Museum of Natural History, Chicago.

Black Andean Toad, Atelopus ignescens, FMNH catalogue no. 199941. Conservation status: extinct. Field Museum of Natural History, Chicago.

Santa Catarina Leaf Frog (Phrynomedusa appendiculata). A specimen in the collection of the Field Museum of Natural History, Chicago. FMNH catalogue no. 83270. Conservation status: near threatened.

Komodo dragon (Varanus komodoensis). Field Museum of Natural History, Chicago. FMNH catalogue no. 22199. Conservation status: vulnerable

Atlantic Goliath Grouper (Epinephelus itajara), FMNH no. 88177. Field Museum of Natural History, Chicago.

Big-leaf Mahogany (Swietenia macrophylla), FMNH 617684. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Black Abalone (Haliotis cracherodii), FMNH 321084. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Black Rhinoceros (Diceros bicornis), FMNH 127848. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Blue Coral (Heliopora caerulea), FMNH 26. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Bush Wren (Xenicus longipes), FMNH 304099. Conservation status: extinct. Field Museum of Natural History, Chicago.

Ivory-billed Woodpecker (Campephilus principalis)., FMNH 39502. Conservation status: extinct. Field Museum of Natural History, Chicago.

Kakapo (Strigops habroptilus). Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Kirtland's Warbler (Dendroica kirtlandii). Conservation status: endangered. Field Museum of Natural History, Chicago.

Komodo Dragon (Varanus komodoensis). Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Deepwater cisco (Coregonus johannae), FMNH no. 2088. Conservation status: extinct. Field Museum of Natural History, Chicago.

Dusky Seaside Sparrow (Ammodramus maritimus nigrescens) (top)Cape Sable Seaside Sparrow (Ammodramus maritimus mirabilis). Field Museum of Natural History, Chicago. Dusky Seaside Sparrow conservation s...

Chinese Paddlefish (Psephurus gladius). Conservation status: extinct. Field Museum of Natural History, Chicago.

Sea Clover (Halophila baillonis), FMNH 1286480. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Latimeria chalumnae, Coelocanth, FMNH no. 76057 and/or 97106 (scales from 2 individuals in one fluid vat). Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Lake Titicaca Orestias or Amanto (Orestias cuvieri), FMNH 41121. Conservation status: data deficient (IUCN) or possibly extinct. Field Museum of Natural History, Chicago.

Cyclosurus mariei, a land snail, FMNH. Conservation status: extinct. Field Museum of Natural History, Chicago.

Cyclosurus mariei, a land snail, FMNH. Conservation status: extinct. Field Museum of Natural History, Chicago.

Mexican Gray Wolf (Canis lupus baileyi), FMNH 7619. Field Museum of Natural History, Chicago.

Millerbird (Acrocephalus familiaris), FMNH 479. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Monarch (Danaus plexippus). Field Museum of Natural History, Chicago.

Yellow Blossom Pearly Mussel (Epioblasma florentina), Field Museum of Natural History, Chicago. No. 68453. Conservation status: extinct.

Huia (Heteralocha acutirostris). Conservation status: extinct. Field Museum of Natural History, Chicago.

California Condor (Gymnogyps californianus). Field Museum of Natural History, Chicago. Conservation status: critically endangered

Passenger Pigeon (Ectopistes migratorius). Field Museum of Natural History, Chicago. Conservation status: extinct

Columbia River Tiger Beetle (Cicindela columbica), FMNH 900158?. Conservation status: endangered. Field Museum of Natural History, Chicago.

Testudo kleinmanni, Egyption Tortoise, FMNH no. 82667. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

European Eel (Anguilla anguilla). Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Evarra eigenmanni, FMNH 3682, paratype. Conservation status: extinct. Only specimen in existence. Field Museum of Natural History, Chicago.

Evarra tlahuacensis, FMNH 3681, paratype. Conservation status: extinct. Only specimen in existence. Field Museum of Natural History, Chicago.

Floreana Giant Tortoise (Chelonoidis niger). Conservation status: extinct. Field Museum of Natural History, Chicago.

Narrow-headed Ant (Formica exsecta), FMNH INS-112837. Field Museum of Natural History, Chicago.

Okapi (Okapia johnstoni), FMNH 104084. Conservation status: endangered. Field Museum of Natural History, Chicago.

Olm or Proteus (Proteus anguinus), FMNH 15928-9. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Chinese Pangolin (Manis pentadactyla), FMNH 32511. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Sunda Pangolin (Manis javanica), FMNH 91353 (skin with claw). Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Alligator sinensis, Chinese Alligator, FMNH no. 38234. Conservation status: critically endangered. Field Museum of Natural History, Chicago.

Hippoglossus hippoglossus, Atlantic Halibut, FMNH no. 51402. Conservation status: endangered. Field Museum of Natural History, Chicago.

Acipenser fulvescens, Lake Sturgeon, FMNH no. 98256. Conservation status: least concern. Field Museum of Natural History, Chicago.

Polyodon spathula, American Paddlefish, FMNH no. 98248. Conservation status: vulnerable. Field Museum of Natural History, Chicago.

Atlantic Bluefin Tuna (Thunnus thynnus), FMNH no. 43993. Conservation status: endangered. Field Museum of Natural History, Chicago.

Cinnamon Screech-Owl (Megascops petersoni). Field Museum of Natural History, Chicago. FMNH catalogue no. 317314. Lack of knowledge of this species has lead to a risk classification nohigher than 'leas...