information about Permian–Triassic extinction event field
Field Hierarchy
| Parent | |||
|---|---|---|---|
Medicine 50.4M papers | Sociology 13.6M papers | Population 4.6M papers | Environmental health 4M papers |
Demography 3.1M papers | Biological dispersal 95.2k papers | Extinction event 8,541 papers | |
| Current | |||
Permian–Triassic extinction event 1,380 papers | |||
| Child | |||
Trends
Notes
History