a, o, d, e, n, p, r, t, i, q, u, y are letters that make 'Quaternary period'
ER, quat, OD, pe, period, te, RN, ar, at, quatern, ternary, RI, quaternary, ern, tern, Rio, AR, Io, peri, Ate, Ar, At, Er, Rn, Na, Te, RNA, Quaternary are words within 'Quaternary period'
1 possible definitions for 'Quaternary period'
Under this definition, quaternary period is a noun and has the following properties:
Quaternary, Age of Man have the same meaning as 'Quaternary period'
'Quaternary period' can be considered an instance of period, geological period.
'Quaternary period' can be a part of Cenozoic, Cenozoic era, Age of Mammals.
Holocene, Holocene epoch, Recent, Recent epoch, Pleistocene epoch, Glacial epoch, Pleistocene are parts of 'Quaternary period'.