Dessa är ordets definitions relaterade till silurian. Klicka på valfritt ord för att gå till dess ords detaljsida. Eller, gå till definitionen av silurian.
0 from or referring to the period of time between about 445 and 420 million years ago, in which fish with jaws (= mouth bones) and some plants and small animals on land first appeared:
1 the period of time between about 445 and 420 million years ago, in which fish with jaws (= mouth bones) and some plants and small animals on land first appeared:
Very recently, discoveries of some new and very well-preserved thelodonts from the Silurian of British Columbia were announced.