Category
page 2Species known from a single specimen
Aenictus hilli
species of insect
Anochetus dubius
species of insect (fossil)

Anonidium usambarense
species of plant
Hopea shingkeng
species of plant
Odontocera josemartii
species of insect
Magnapinna talismani
species of mollusc
Clarias lamottei
species of fish
Sinocyclocheilus luopingensis
species of fish
Procambarus angustatus
species of crayfish
Diploglossus microlepis
species of reptile
American pocket shark
Mollisquama mississippiensis

Archivea kewensis
species of plant
Garra yiliangensis
species of fish
Lopholiparis flerxi
species of fish
Odontomachus spinifer
species of insect (fossil)

Nettenchelys taylori
species of fish
Chimaera bahamaensis
species of fish
Melodichthys hadrocephalus
species of fish
Hadronyche pulvinator
species of arachnid
Anochetus corayi
species of insect (fossil)

Cariniana penduliflora
species of plant
Coleopsis
Coleopsis is an extinct genus of stem-group beetles. It contains a single species, Coleopsis archaica, and is the only member of the family Coleopsidae and superfamily Coleopsoidea. It is known from a single specimen from the Early Permian of southwestern Germany, estimated to be about 297 million years old. It is currently the oldest known beetle.
Aleiodes gaga
species of insect
Leopardus narinensis
small wild cat
Afrogarypus seychellesensis
species of pseudoscorpions

Nettenchelys erroriensis
species of fish
Aphanopleura zangelanica
species of plant

Fukomys ilariae
species of mammal
Ilex cookii
species of plant
Thick-lipped pebblesnail
species of mollusc

Nettenchelys paxtoni
species of fish

Grimpoteuthis plena
species of mollusc
Hesperelaea
Hesperelaea is a monotypic genus of trees in the olive family which contains the single species Hesperelaea palmeri, now probably extinct. The species was found only on Guadalupe Island, a small island in the Pacific Ocean, part of the Mexican state of Baja California, about southwest of Ensenada. It was collected once in 1875 by Edward Palmer, who found three living individuals. He remains the only recorded person to have seen the species alive. The small population of the species, the devastating effects of feral goats, and the overexploitation of the island's woody plants likely meant that
Musa fitzalanii
species of plant
Hibiscadelphus bombycinus
species of plant
Odontomachus pseudobauri
species of insect (fossil)
Poecilobothrus majesticus
extinct species of fly
Grimpoteuthis pacifica
species of mollusc
Anatemnus seychellesensis
species of pseudoscorpions
Lissonanchus lusheri
species of fish
Hibiscadelphus crucibracteatus
species of plant

Nettenchelys inion
species of fish
Ingolfiella longipes
species of amphipod crustacean
Grimpoteuthis hippocrepium
species of mollusc
Acantholimon gabrieljaniae
species of plant
Aphaenogaster longaeva
species of insect (fossil)
Felicola isidoroi
species of insect
Hieracium coloratum
species of plant
Alloperla acadiana
species of insect
Auckland Islands Shore Plover
species of bird
Myoporum rimatarense
species of plant
Grimpoteuthis abyssicola
species of mollusc
Termitaradus mitnicki
species of insect (fossil)
Melanophryniscus peritus
species of amphibian
Deinodryinus velteni
species of insect (fossil)
Amazilia alfaroana
species of bird
Rattus feileri
species of rodent
Melloconcha miranda
species of mollusc
Pogogyne tenuiflora
species of plant
Cirroctopus mawsoni
species of mollusc