I don't know what kind of detail may be reasonably expected in an explanation that in one translation is 968 words including all the verse numbers!
Thus the account is brief to the point where the purpose is obvious -- it is not for the sake of giving us detail; rather, it is given simply to have the assurance that God did it in order, and that God did it.
There is an HP that claims the Bible mentions the dins. I do not make such claim. Rather, if the Genesis account was for solving a question everybody has sooner or later, then wouldn't it be enough to mention animals that existed around people rather than including extinct ones too -- remember its brevity!
This link claims the dins are in the Bible:
http://www.s8int.com/
On this link here there is a discussion from the Biblical viewpoint and trying to solve the various problems proponents of evolution throw up.
http://bythebible.page.tl/Creation.htm