posted on Aug, 1 2016 @ 04:47 PM
This may end up being way off.
But. Here goes.
To solve this age old question. I would like to take it back further in time, to before birds.
Amphibians and reptiles are very closely linked.
Amphibians are mainly spawn bearers. Spawn just being lots of unprotected embryonic sacs in a clump.
Eggs are protected embryonic sacs in a hard shell.
Is spawn then the link between live birth and egg? I think it might be.
Without the same need for water. Reptiles developed a way to protect their embryo's in a hard shell.
IMO. Reptiles are a transition from amphibians to land dwellers.And. Spawn being the transition from live birth to egg.
So my answer to chicken or egg is chicken. Because egg laying came before birds.