Earth & Environmental Sciences
Ordovician
100%
ichnofacies
48%
vertebrate
47%
fish
39%
Gondwana
33%
ichnology
26%
conodont
26%
habitat
20%
taphonomy
18%
tissue
17%
sandstone
17%
paleoecology
17%
fossil
13%
outcrop
12%
trace fossil
11%
North America
11%
basin
11%
Avalonia
10%
histology
9%
Laurentia
9%
new genus
8%
brachiopod
8%
sea level
7%
shale
7%
shell bed
7%
sedimentary rock
7%
sediment
6%
border
6%
biomineralization
6%
trilobite
5%
cladistics
5%
bone
5%
ecological niche
5%
quartzite
5%
young
5%
Agriculture & Biology
vertebrates
46%
Oman
43%
fish
33%
sandstone
24%
Crinoidea
24%
paleoecology
23%
fossils
22%
Bolivia
21%
biomineralization
20%
skeletal development
19%
Northern Territory
19%
habitats
18%
Wales
17%
niches
12%
sediments
10%
British Isles
9%
tissues
6%
sedimentary rocks
5%
sampling
5%