According to Mostafa Waziri, the secretary-general of the Egyptian Supreme Council of Antiquities, 80 out of 83 found burial sites were built in the first half of the 4th millennium B.C.
The burial sites have a shape of an oval and contain clay coffins and various ware, the official said on Wednesday.
Waziri added that these were the first burial sites with clay coffins found in the province of Dakahlia.
Egypt is one of the hotbeds of the ancient civilization. The pharaonic era started in the 4th millennium BC and ended in 332 BC with the Macedonian conquest.