The Hirnantian (Late Ordovician) and end-Guadalupian (Middle Permian) mass-extinction events compared
| Image |  |
|---|---|
| Description | article published in 2017 |
| Author/s |
author: Thomas Servais Yukio Isozaki |
| Publication date | December 8, 2017 |
| Language | |
| Country of origin | |
| Wikipedia link | |
| Copyright status | |
| Missing/wrong data? | Edit Wikidata item |