information about Ordovician field

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