c/shittyaskscience · by actionjbone@sh.itjust.works · 106d

Why don't all mammal babies have egg teeth? All of them come from eggs.

2 points · 2 comments · view on lemmy.world

2 Comments

TraipsersWill@lemmy.world · 3 pts · 102d

Mammal noses were once 'egg teeth', but for some reason mammal eggs lost their hard shells, and the noses (scientific name: 'schnozzolae') were re-purposed for the olfactory sense.

Eeyore_Syndrome@sh.itjust.works · 0 pts · 106d

Echidnas do.

Not sure about other Monotremes.

The Egg-Laying™ Mammals.Actual