a, o, d, e, g, l, p, c, r, i are letters that make 'geological period'
ER, log, OD, logic, pe, period, IC, RI, Gi, logical, ic, geological, geologic, GI, Rio, AL, CA, Io, peri, Al, Ca, Er, Ge are words within 'geological period'
1 possible definitions for 'geological period'
Under this definition, geological period is a noun and has the following properties:
period has the same meaning as geological period
'geological period' can be a type of geological time, geologic time.
ice age, glacial period, glacial epoch are types of 'geological period'.
Quaternary, Quaternary period, Age of Man, Tertiary, Tertiary period, Cretaceous period, Jurassic period, Triassic period, Permian period, Carboniferous, Carboniferous period, Pennsylvanian period, Upper Carboniferous, Upper Carboniferous period, Mississippian, Lower Carboniferous, Lower Carboniferous period, Devonian, Devonian period, Age of Fishes, Silurian, Silurian period, Ordovician, Ordovician period, Permian, Pennsylvanian, Missippian period, Cambrian period, Jurassic, Triassic, Cambrian, Cretaceous. are instances of 'geological period'
'geological period' can be a part of era, geological era.
epoch is a part of geological period.
"ganoid fishes swarmed during the earlier geological periods"