S₁I₁L₁U₁R₁I₁A₁N₁

8 points

SILURIAN is validvalid

of or pertaining to a certain geologic time period [adj]

82,163 of 196,601 in NWL2023·also valid in CSW24

formed in the third period of the Palaeozoic era [adj]

223,151 of 280,887 in CSW24·also valid in NWL2023