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Words semantically related to '
Ordovician
' are:
Silurian
trilobites
Devonian
Cambrian
Paleozoic
478
orogeny
cephalopods
Gondwana
471
faunal
arthropods
Carboniferous
shales
Precambrian
Permian
dolomite
sandstones
shale
Mya
sedimentary
glaciation
quartzite
Mississippian
laminated
Pittman
sediments
calcareous
Triassic
intrusions
strata
bedrock
fossils
outcrop
fossilized
igneous
suture
conglomerates
metamorphic
outcrops
Tuscarora
sandstone
diversification
Fells
fossil
corals
geologic
geologically
carbonate
Murchison
stratigraphic
mollusc
488
rocks
extinct
extinction
limestone
coiled
exposures
latitudes
deposited
carnivorous
molluscs
Caledonian
eroded
shelled
collided
Cretaceous
vertebrates
uplift
geologists
Jurassic
drifted
ventral
deformed
tectonic
skeletons
deposits
lineages
genera
460
epoch
shallow
fauna
Appalachian
deposition
spores
continents
ago
volcanic
formations
sediment
quartz
diversified
flattened
Geological
geology
periods
massif
equator