Paleoendemism

Neoendemism refers to species that have recently arisen, such as through divergence and reproductive isolation or through hybridization and polyploidy in plants.

[1] The second part of the word, endemism is from Neo-Latin endēmicus, from Greek ενδήμος, endēmos, "native".

[2] Changes in climate are thought to be the driving force in creating paleoendemic species, generally due to habitat loss.

Regions where the climate has remained relatively stable form refugia which are more likely to be endemic hotspots today.

However, paleoendemism differs as it does not require additional factors such as barriers and ecological opportunities as it does not rely on adaptive radiation like neoendemism does.