Over 1,100 New Mammal Species Documented Globally Since 1990 with 90 Percent Found in Tropics

A recent study published in the *Journal of Systematics and Evolution* highlights notable trends in the discovery and classification of new mammal species over a 35-year period, from 1990 to 2025. Researchers documented the description of 1,116 new mammal species during this time frame, with nearly 90% of these discoveries originating from tropical regions. Despite this concentration of findings in tropical areas, studies conducted in temperate regions were found to demonstrate greater methodological robustness.

The research underscores the biodiversity richness of tropical countries, which continue to yield the majority of newly identified mammal species. However, it also points out that studies conducted in temperate zones often adhere to more rigorous scientific standards and methodologies. This contrast between quantity and quality highlights differences in research approaches across geographic regions. The findings provide valuable insights into global biodiversity exploration efforts and suggest potential areas for improvement in future taxonomic studies.

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Date: April 8, 2026

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GOAI