Ordovician

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

Field Hierarchy

Parent
Biology 34.8M papers	Geology 9.1M papers	Paleontology 5.3M papers	Geochemistry 744k papers
Current
Ordovician 24.7k papers
Child
Trilobite 3,218 papers	Laurentia 2,991 papers	Baltica 2,760 papers

Trends

Notes

History