You state: “Birds, and reptillians, are the progeny supposedly.” In fact the dinosaurs were an offshoot of the reptilian line. Both continued to evolve and differentiate over time. For that matter, mammals separated and evolved at almost the same time as dinosours or perhaps a little earlier, although the great Permian extinction greatly weakened the mammalian line and allowed the dinosaurs to erupt on the world stage. The point is that by the time dinosaurs existed that were most likely warm blooded, many millions of years separated them from their cold blooded reptilian antecedents.
And BTW, since the European immigrants and the African immigrants are minor subsets of the source populations and come from different areas and have different genetics:
"The specifics [sic] are incompatible. The inability to crossbreed is an issue as well. No genetic pool to deal from. All must be inbred mutants."
Q.E.D. LSMFT!