Word:
Browse
Silly
silly season
silly walk
Sillyhow
Silo
siloxane
Silphium
Silphium laciniatum
SILS
Silt
silt up
siltstone
Silty
Silundum
Silure
Silurian
-- Silurian period --
silurid
silurid fish
Siluridae
Siluridan
siluriform fish
Siluriformes
Siluroid
Siluroidei
Silurus
Silurus glanis
Silva
Silva caedua
Silvan
Silvanite
Silvanus
Silvas
Silurian period
Noun
1.
Silurian period
-
from
425
million
to
405
million
years
ago
;
first
air-breathing
animals
Synonyms:
Silurian
geological
period
,
Paleozoic
,
Paleozoic
era
,
period
,
Silurian
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