s, a, o, d, e, p, c, r, t, i, u are letters that make 'Cretaceous period'
ER, OD, pe, period, re, ETA, ACE, AC, eta, RI, ace, Cretaceous, cretaceous, CE, Rio, US, Io, Re, peri, CEO, Ac, Ce, Cr, Er, Ta, ret are words within 'Cretaceous period'
1 possible definitions for 'Cretaceous period'
Under this definition, cretaceous period is a noun and has the following properties:
Cretaceous has the same meaning as Cretaceous period
'Cretaceous period' can be considered an instance of period, geological period.
'Cretaceous period' can be a part of Mesozoic, Mesozoic era, Age of Reptiles.
Cretaceous is a derivative of Cretaceous period.