What in the world are Dynasties?

A dynasty is a succession of people belonging to the same families that had great power. In other words that means a certain time period some one ruled in. So how does this relate to Queen Pharaohs? Well every queen pharaoh ruled in a dynasty. There were 30 dynasties of Egypt. For example Queen Nefertari ruled in the 18th dynasty. The 18th dynasty was a dynasty a lot of pharaohs ruled in. So did Nefertiti , and Hatshepsut. Cleopatra was the last pharaoh so she ruled in the 30th dynasty Ptolemaic period. The Ptolemaic period means "Greek". Also Arisinoe II was in the ptolemaic period too! But only 30 dynasties doesn't mean there were only 30 pharaohs! Ohhhh No! People say that there were more than several hundred pharaohs. Scientist don't know for sure because they have found too many! The dynasties were sorted into groups. Old Kingdom, Middle Kingdom, and New Kingdom.