This is a list of taxa whose location or distribution is notably difficult to explain; e.g., species which came to occupy a range distant from that of their closest relatives by a process or history that is not understood, or is a subject of controversy.

Specific taxa

*Mammals **

Falkland Islands wolf Falkland may refer to: * Falkland, British Columbia, a community in Canada * Falkland, Nova Scotia, a community in Canada * Falkland Islands, an archipelago in the south Atlantic Ocean * Falkland, Fife, a former burgh in Fife, Scotland ** Falklan ...

Gansu mole The Gansu mole (''Scapanulus oweni'') is a species of mammal in the family Talpidae endemic to central China, where it occurs in Shaanxi, Gansu, Sichuan, and Qinghai. It is the only species in the genus ''Scapanulus''. Along with the Medog mol ...

Pennant's colobus Pennant's colobus or Pennant's red colobus (''Piliocolobus pennantii'') is a species of tree-dwelling primate in the family Cercopithecidae. It is endemic to tropical Central Africa. Three subspecies have traditionally been recognised but its dis ...

*Birds **

Elephant bird Elephant birds are members of the extinct ratite family Aepyornithidae, made up of flightless birds that once lived on the island of Madagascar. They are thought to have become extinct around 1000-1200 CE, probably as a result of human activity. ...

s **

Moa Moa are extinct giant flightless birds native to New Zealand. The term has also come to be used for chicken in many Polynesian cultures and is found in the names of many chicken recipes, such as Kale moa and Moa Samoa. Moa or MOA may also refe ...

Nicobar megapode The Nicobar megapode or Nicobar scrubfowl (''Megapodius nicobariensis'') is a megapode found in some of the Nicobar Islands (India). Like other megapode relatives, it builds a large mound nest with soil and vegetation, with the eggs hatched by th ...

*Reptiles **''

Brachylophus The genus ''Brachylophus'' consists of four extant iguanid species native to the islands of Fiji and a giant extinct species from Tonga in the South West Pacific. One of the extant species, ''B. fasciatus'', is also present on Tonga, where it ha ...

'' **'' Lapitiguana'' **''

Phelsuma andamanense The Andaman day gecko (''Phelsuma andamanensis''), also known as the Andaman Islands day gecko, is a species of gecko in the genus ''Phelsuma''. It is endemic to the Andaman Islands of India, and has recently been introduced to the Nicobar is ...

Assemblages of taxa

Lusitanian flora The Lusitanian flora is a small assemblage of plants that show a restricted and specific distribution in that they are mostly only to be found in the Iberian Peninsula or southwest Ireland. Generally, the plants are not found in England or western ...

References

{{DEFAULTSORT:Biogeographical puzzles Biogeography Lists of animals