Ordovician

https://www.wikidata.org/wiki/Q62100

Field Hierarchy

Parent
Biology 36.7M papers	Geology 10.6M papers	Paleontology 5.6M papers	Geochemistry 811k papers
Current
Ordovician 26.5k papers
Child
Trilobite 3,370 papers	Laurentia 3,035 papers	Baltica 2,861 papers

Trends

Notes

History