The'''Ìgbà Kámbríà'''Cambrian (''Cambrian'') is the firstni [[geological period|igba oniseorooriile]] akoko ti Igba of the [[Paleozoic]] Era, lasting from {{period span|Cambrian}} {{ICS 2004}}; it is succeeded by the [[Ordovician]]. Its subdivisions, and indeed its base, are somewhat in flux. The period was established by [[Adam Sedgwick]], who named it after [[Cambria]], the [[Latin]] name for [[Wales]], where Britain's Cambrian rocks are best exposed.<ref name=Sedgwick1852>{{cite journal|doi=10.1144/GSL.JGS.1852.008.01-02.20|author=Sedgwick, A. |year=1852|title=On the classification and nomenclature of the Lower Paleozoic rocks of England and Wales|journal=Q. J. Geol. Soc. Land. |volume=8|pages=136–138}}</ref>
