Certainly, what you say seems to come from a point in the center of that region.
I've asked for a textbook source that documents exactly where the fossils have been found, along with their condition and exact position relative to the physical, geoloic column. So far no one has been forthcoming
You won't find that in textbooks. You'll find it in primary sources; journal articles.
Frankly it is a shame that the lion's share of geologic study has taken place under the aegis of Darwinist thought. It is also a shame that the same people who publish their findings do not list from the get go what assmptions they've made in interpreting the evidence.
Why? Because some twit on FR doesn't understand the interrelationships between human knowledge? Let's see, I'm working on a paper on the infrared spectroscopy of molecules. Let's start by assuming that my readers don't believe in atoms or molecules, so we'll review the entire body of evidence for both. That'll take care of the first 1000 pages.
Surely you've seen pictures of what normally happens aqt a paleological site? The topsoil removed with tiny paintbrushes, a quarter inch at a time, so that every little nit can be mapped? No one is going to find this for you in a book, if you really need to see it, go to your nearest university paleontology department and ask to see the map archives.