Hypothetical species

A 1722 illustration by Jean-Baptiste Labat of three parrots on Guadeloupe. There are no remains of these parrots and so accurate taxonomic classification is impossible.

Several extinct species have been postulated, but owing to a lack of evidence they can only be regarded as hypothetical extinct species. They have caused confusion, as they may have been a separate species, a subspecies, or an introduced species.^[1]

Parrots

Populations of several parrot species were described mainly in the unscientific writings of early travelers to the Caribbean and Mascarene Islands, and subsequently scientifically described by several naturalists mainly in the twentieth century, with no more evidence than the earlier observations and without specimens, to have their names associated with the extinct species that they were postulating.^[1]

References

1 2 Fuller, Errol (1987). Extinct Birds. Penguin Books (England). p. 131. ISBN 0-670-81787-2.

Extinction

List of recently extinct species

Phenomena	Background extinction rate Coextinction De-extinction Ecological extinction Extinct in the wild Functional extinction Genetic pollution Lazarus taxon Local extinction Pseudoextinction

Models	Extinction vortex

Causes	Genetic erosion Habitat destruction Human overpopulation Muller's ratchet Mutational meltdown Overexploitation

Theories and concepts	Extinction debt Extinction risk from global warming Extinction threshold Field of Bullets Hypothetical species Latent extinction risk

Extinction events	Timeline of extinctions Ordovician–Silurian Late Devonian Permian–Triassic Triassic–Jurassic Cretaceous–Paleogene Quaternary Holocene

Extinct species	Lists of extinct species Lists of extinct animals List of extinct plants IUCN Red List extinct species

Organizations	International Union for Conservation of Nature IUCN Species Survival Commission Voluntary Human Extinction Movement

See also	Decline in amphibian populations Human extinction

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