Ordovician

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

Field Hierarchy

Parent
Biology 36M papers	Geology 10.4M papers	Paleontology 5.5M papers	Geochemistry 799k papers
Current
Ordovician 26.2k papers
Child
Trilobite 3,314 papers	Laurentia 2,993 papers	Baltica 2,819 papers

Trends

Notes

History