Earth and Planetary Sciences

1. Brachiopod 100%
2. Canada 40%
3. Aragonite 30%
4. Calcite 30%
5. New Taxon 22%
6. Environmental Change 20%
7. Ordovician 20%
8. South Australia 20%
9. Carbon 14 20%
10. Sclerite 20%
11. Locale 20%
12. Alberta 20%
13. Fossil Assemblage 20%
14. British Columbia 20%
15. Arthropod 20%
16. Carbon 20%
17. Marine Chemistry 20%
18. Lower Carboniferous 20%
19. Parathion 13%
20. Paleozoic 10%
21. Middle Jurassic 10%
22. Calcium Carbonate 10%
23. Fossil Record 10%
24. Geological Time 10%
25. Paleozoic Era 10%
26. Sea Bed 10%
27. Calcareous Plankton 10%
28. Morphology 10%
29. Magnesium 10%
30. Phanerozoic 8%
31. Late Ordovician 6%
32. Mass Extinction 6%
33. Silurian 6%
34. Deep Water 6%
35. Common Ancestry 5%
36. Biomineralization 5%
37. China 5%
38. Rooting 5%