Haaretz (deep-linked) has more details that some have brought up.
"Asked what it’s like to excavate a thousand-year-old toilet, Nagorsky explains that in the interim, the waste became dirt. They’re simply digging in dirt. It’s fine."
Dating of the egg is so far incidental, done by relational strata:
"That lamp was of a type only made in the late Abbasid period, Nagorsky explains – about 1,000 years ago. And thusly, they dated the chicken egg to that time."
"Asked what it’s like to excavate a thousand-year-old toilet, Nagorsky explains that in the interim, the waste became dirt. They’re simply digging in dirt. It’s fine."
Dating of the egg is so far incidental, done by relational strata:
"That lamp was of a type only made in the late Abbasid period, Nagorsky explains – about 1,000 years ago. And thusly, they dated the chicken egg to that time."
High-res image with the crack(s): https://img.haarets.co.il/img/1.9888354/233647132.jpg
No description of the yolk yet that I could see.