--Differs from nearly all other dinosaur fiction in that the reader is brought into the past rather than dinosaurs being brought to our time. --Unlike most other dinosaur fiction, Hell Creek portrays the Cretaceous Period with great realism, so the reader feels that he/she is actually there. --The book was written by two novelists who are also scientists, and the science (painstakingly reviewed by three paleontologists)is dead-on accurate and current. --This book is of interest to professional and amateur paleontologists as well as to the general population. --One of the only dinosaur mysteries on the market (NOTE: the plot involves a detective story and a mystery). --Has been used by a paleontology professor as assigned reading for students in a college course. --Has already had successful limited edition special sales: 1. Museum bookstore. 2. Two professional geological societies (American Geophysical Union and Geological Society of America).