The consequences of this type of event are the subject of numerous studies because they can constitute an analogue of current global warming.
Probably the most notable of these is the abrupt warming marking the end of the Younger Dryas, which saw an average annual temperature rise of several degrees in less than a century.
Mammals that experienced a great development after the extinction of the end of the Cretaceous will be strongly affected by the climatic warming of the Paleogene.
This is how a large number of groups of mammals appear at the beginning of the Eocene, about 56 million years ago:[17] Even if the hyperthermal events of the Paleogene appear extremely brutal on the geologic time scale (in a range of a few thousand years for an increase of the order of 5 °C), they remain significantly longer than the durations envisaged in the current models of global warming of anthropogenic origin.
[18][19] The various studies of hyperthermal events insist on the phenomena of positive feedbacks which, after the onset of a warming, accelerate it considerably.