Earth & Environmental Sciences
paleosol
100%
carbon isotope
66%
oxygen isotope
66%
plain
63%
stable isotope
60%
Pleistocene
54%
grassland
54%
fossil
49%
Neogene
47%
mammal
44%
enamel
43%
paleoclimate
43%
carbonate
42%
biomass
35%
fauna
33%
North America
33%
paleoecology
33%
land mammal
30%
grass
29%
history
29%
diet
28%
extinction
28%
Pliocene
28%
magnetic mineral
28%
environmental change
27%
basin
26%
latitudinal gradient
25%
fossil record
24%
carbon
24%
ungulate
22%
C3 plant
22%
East Africa
21%
ecology
20%
C4 plant
20%
tooth
20%
brachiopod
19%
rodent
19%
habitat
19%
preserve
19%
temperature
19%
meteoric water
18%
vegetation
18%
bone
17%
Paleocene
17%
carbon cycle
17%
environmental gradient
17%
transition
17%
Agriculture & Biology
paleosolic soil types
79%
fossils
75%
oxygen isotopes
61%
carbon isotopes
55%
stable isotopes
51%
Proboscidea (mammals)
50%
carbonates
42%
mammals
42%
basins
41%
tooth enamel
41%
Mammalia
35%
climate change
31%
grasslands
30%
climate
24%
teeth
24%
C3 plants
22%
Equus grevyi
22%
C4 plants
20%
Lake Victoria
20%
carbon
20%
fauna
20%
bones
20%
ecology
19%
Kenya
19%
rodents
19%
temperature
19%
extinction
18%
Sigmodon
17%
Eastern Africa
17%
stratigraphy
16%
grasses
16%
enamel
16%
tectonics
16%
paleoecology
16%
ecosystems
16%
biomass
15%
Gaylussacia
15%
magnetism
15%
diet
15%
Great Plains region
14%
vegetation
14%
environmental factors
13%
sodicity
13%
Microtus
13%
archaeology
13%
terrestrial ecosystems
13%
Danube River
12%
woodlands
12%
species richness
12%
Eurasia
12%