Mystery in Acambaro, (by Charles Hapgood, reprinted in 2000), brings to light the many clay figurines, some of which depict dinosaurs interacting with humans. According to Amazon.com, “Hapgood researched the Acambaro collection . . . with Erle Stanley Gardner . . . in the mid-1960s. . . . hundreds of clay figurines that are apparently thousands of years old; however, they depict such bizarre animals [dinosaurs] and scenes that most archaeologists dismiss them as an elaborate hoax.”
But the strong suggestion (if not proof) that dinosaurs lived with those ancient people–that is what prompted some archaeologists to dismiss the figurines as hoaxes; the evidences for authenticity were not considered because of the depictions of dinosaurs.
From the foreword of the book itself we read, “In 1944 an accidental discovery of an extremely controversial nature occurred in Acambaro, Mexico. The find eventually yeilded over 33, 500 objects of ceramic and stone (including jade), and knives of obsidian.”
According to Amazon, this book has 256 pages, but the copy I’m looking at has only 153 (plus about 20 pages of advertisements). Nevertheless the subject is fascinating, with many illustrations of the ancient figurines.