as opposed to “Old Kingdom” ......
or Middle Kingdom
The Ptolemaic Kingdom 305 BC to 30 BC
Third Integrum: 1544 BC to 305 BC (dark period historically chaos reigned)
New Kingdom: 1570 BC and 1544 BC.
Second Integrum: 1800 BC to 1570 BC (dark period historically chaos reigned)
Middle Kingdom: 2050 BC and 1800 BC
First Integrum: 2181 BC to 2050 BC (dark period historically chaos reigned)
Old Kingdom: (2686 BC by some counts) 2613 BC and 2181 BC
Pre-Dynastic Period: 3100 BC to 2613 BC
Earlier Egyptian Periods:
Neolithic 11,000 BC
Mesolithic 20,000 BC
Late Paleolithic 40,000 BC