Period is a term in secular geology that applies to a particular strata in the fossil record. The Jurassic period which supposedly happened 200 million years ago is an example of this. The current period we are now in, according to secular geologists, is the Quaternary Period which supposedly began around 2 million years ago. Creation scientists use period terms to describe strata but use it as a system only and not to refer to dates. The supposed epoch we are now in is known as the Holocene, which is part of the Quaternary Period. The Holocene is theorized to have covered that last 10,000 to 12,000 years. Young Earth creationists state that since the Earth only began 6,100 years ago (some creationists say up to 12,000), the Holocene encompasses all of the fossil strata, not just the Quaternary.