Since neither of us was there, we must base our opinions on what we consider the best authority. If no credible authority exists, then it is foolishness to be dogmatic on any possible explanation.
I must, as an issue of faith and to be consistant with what I know to be true, have considered the Bible as the absolute authority on this topic. Fortunately, the evidence supports the Bible's claim. According to lineage, and the reasonable assumption that the lineages are consecutive, Usher's date puts the age of the earth at under seven thousand years. This of course makes 60 to 150 million years ago impossible. What evolutionists call evidence of billions of years of uniform environment, Creationists call evidence of a catastrophic global flood that we are told is only a several thousand years old.
The empirical evidence we have today that "dinosaurs" and man walked together is found in places like GlenRose Texas, granted the human footprints are large and are indicative of a very tall (or giant) people. No problem, the Antediluvians talked about a race of giants we call the Nephilim. (Imagine the NY Giants changing their name...heh,heh,heh). There is also the chinese legends and the south american pottery, and north american and european cave art that features in convincing detail certain large creatures evolutionists would label "dinosaurs" if they were only dead 60 million years previously. Job was reminded of a great Behemoth, that theistic evolutionists have tried to pass off as a hippopotamus (despite the tail described as a mighty cedar, and the "tightly knit" thighs ). John Allen Watson, a geologist here in Austin wrote a paper titled "Behemoth" that describes in detail why this creature was probably a sauropod. According to Dr Look, French Congo tribes today still talk about (and apparently worship) a sauropod like creature that lives in the waters and occasionally capsizes their canoes (with men in it) with its "trunk".
So I base my opinions on Scripture, and also on the empirical observations made by archaeologists, and the numerous claims of disparate cultures around the world to co-exist with these "dinosaurs". There is even certain European lore of "dragon slayers" as recent as the Medieval ages. Nessie within the confines of Loch Ness? Is absence of evidence evidence of absense?
A friend of mine was born and raised Jewish. He studied at what he says was the top Yeshiva (rabbinical school) in New York, and graduated at the top of his class. He says that his studies led him to conclude that Jesus is indeed Messiah. I worshiped God with him for 14 years, and trust his knowledge of scripture and the history of the Jewish people.
As it turns out, it is not reasonable to assume that the lineages are consecutive. I'm told that that is not how the Hebrews did things. The official histories of Israel only include the annals of the kings and the accurate lineage of the Kings family to Abraham. No other lineage really mattered. In their long histories before Abraham, which were otherwise recorded faithfully, they tended to only mention men of note and important events. For instance, there seems to be a long gap between Noah's sons and Abraham.
Actually, I don't know what to think of Noah's story. I don't think that the evidence bears out a world-wide flood 4 or 5 or 6,000 years ago. Egyptian, Minoan, Chinese, Scythian and Indian cultures appear to be older than that.
My conclusion is that the writers and compilers of Hebrew scripture probably never intended to give an exact time-line of the world.
I don't intend to belittle your position in any way, but only to demonstrate that I too base my world-view on scripture history and the history of scripture. I only have a different opinion, based on scripture, known history and geology, on how God may have done things.