Egypt's Minister of Antiquities Khaled El-Enany described the find as a "museum by itself."
The Egyptians mummified all manner of animals, including cats, dogs, falcons, monkeys, snakes, crocodiles, cows, and many others.
The famous "Bent" pyramid is now open for visitors for the first time since 1965.
The tomb contained the bodies of adults and children stored across multiple burial chambers.
The archaeological discoveries were made at Quesna Cemetery, north of Cairo.
Photographs show one sarcophagus painted with the image of a human in deep blue and ochre.
"Humankind needs to do more" to protect penguins.
Archaeologists think that several expensive items found in the grave, including a gemstone buckle on a beaded belt and a mirror found in a makeup box, were placed there to accompany the woman into the afterlife.
Researchers were "really, really surprised" to find that tattoos on two 5,000-year-old mummies.
Some of the papyrus scraps carry everyday notes like shopping lists or tax returns.
Three of the children appeared to have been well-cared for; the fourth did not, possibly due to differences in social class.
Sadly, there are no treatments that can help at this point.
The X-ray allowed researchers to examine the rich assortment of objects that had been buried inside along with the girl's body.
The haul of jewelry, statues and ancient sarcophagi was recovered from Luxor's Valley of the Kings.
Remains of a baby and an adult dating back 800 years were found in burial cocoons at the archaeological site.