A history of current research on quasi-human ichnofossils (supposed man tracks) in mesozoic strata is offered herein. The authors review literature relative to studies of human-like tracks along the Paluxy River, Glen Rose, Texas. They also present a history of work on humanoid tracks in Arizona. A general geographic and geologic description of the study sites near Tuba City, Arizona, is given together with some pictures of representative tracks. A full presentation of results and conclusions will appear in Part II.