So there's no lore about half-reptilian humans?
http://www.uesp.net/wiki/Lore:Notes_on_Racial_Phylogeny
"Argonians, like the dreugh, appear to be a semi-aquatic troglophile form of humans, though it is by no means clear whether the Argonians should be classified with dreugh, men, mer, or (in this author's opinion), certain tree-dwelling lizards in Black Marsh."Also, what would a half argonian half khajit look like ?
"It is less clear whether the Argonians and Khajiit are interfertile with both humans and elves. Though there have been many reports throughout the Eras of children from these unions, as well as stories of unions with daedra, there have been no well documented offspring."So,
Notes on Racial Phylogeny suggests that Men and Mer are interfertile, but offspring will resemble the mother thus the seeming lack of large numbers of obvious "half-breeds":
After much anolysis of living specimens, the Council long ago determined that all "races" of elves and humans may mate with each other and bear fertile offspring. Generally the offspring bear the racial traits of the mother, though some traces of the father's race may also be present.And as quoted above, it suggests Khajiit and Argonians are unknown quantities
with regard to offspring, Barenziah's antics aside.
Orcs also get an interesting treatment:
"The reproductive biology of orcs is at present not well understood, and the same is true of goblins, trolls, harpies, dreugh, tsaesci, imga, various daedra and many others."Orcs being Mer, one would think the standard Man/Mer rules would apply...of course it could simply be that other Mer are trying to deny the kinship. :shrug: