Jon I have argued for a long time here that all reptiles became belly crawlers and were radically changed physiologically at the time of the Genesis curse from legged creatures such as dinos. This curse did not say that all would
lose their legs but that they would become belly crawling creatures. So even though your snake links depict legged snakes, they like the other reptiles such as lizards, crocks, gators, et al have either no legs or short legs as per the Biblical record. The word for "serpent" (Hebrew nachash) is the only Old Testament word that I am aware of for reptilians or serpents which would include dinosaurs.
We cannot confirm the credibility of the Biblical record on this, but as Origen is saying, it is the only historical record that records an explanation for legged reptile/snake fossils.
BUZSAW B 4 U 2 C Y BUZ SAW ---- Jesus said, "When these things begin to come to pass, then look up, and lift up your heads, for your redemption draws near." Luke 21:28