Hypothetical species

Common card · No. 475732

Several species have been assumed to exist, but due to a lack of physical evidence they can only be regarded as hypothetical or potential species. Hypothetical species are usually believed to be extinct. They have caused confusion, as they may have been a separate species, a subspecies, an introduced species or a misidentification. It can also refer to species that are hypothesised to have existed evolutionarily.

Read on Wikipedia · Image Jean Baptiste Labat, Public domain