The geologic time scale is divided into eons. The eons are broken down into eras, which then are broken down into periods. I will list the correct divisions below.

Eons: Phanerozi, Proterozoic, Archean

Eras: (Phanerozic): Cenozoic, Mesozoic, Paleozoic

(Proterozoic):Neoproterozoic, Mesoproterozoic, paleoproterozoic

(Archean): Neoarchean, Mesoarchean, Paleoarchean, Eoarchean

(Cenozoic)Quaternary, Neogene,Paleogene

(Mesozoic)Cretaceous, Jurassic, Triassic

(Paleozoic)Permian, Carboniferous, Devonian, Silurian, Ordovician, Cambrian

(Neoproterozoic)Ediacaran, Cryogenian, Tonian

(Mesoproterozoic)Stenian, Ectasian, Calymmian

(Paleoproterozoic)Statherian, Orosirian, Rhyacian, Siderian

Most scientists believe that the most recent Ice Age ended in 10,000 B.C. There are a few modern scientists that belief we are currently seeing the end of the last Ice Age. Their argument is based on the fact that glaciers still exist in both the northern and southern hemispheres. Since, there is evidence the Antarctic was once green and is now a glacier covered wasteland, that the earth's current warming trend is part of this global recovery. {See creation science websites for more details on this new theory.}

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It's likely we are still in the Ice Age: the date above, which should be BP for geological references, not BC (that's for history) being that of the nominal end of the last glaciation.

An Ice Age is a sequence lasting a few million years of cool and warm phases, and we are presently in a warm phase which may have a way to go before it starts to reverse to a glacial phase. The Earth's climate overall is still significantly cooler, with consequent lower sea-level, than it has been for much of geological time.