Posthumous publication.
Begun in the year 1974 according to the afterword by Sherri Crichton, this novel was abandoned at an unknown later time: the research on dinosaurs likely has been used for "Jurassic Park".
Based on the competition between the paleontologists Marsh and Cope, this novel is mildly speculative in that it is ahistorical (as stated in the afterword): though set in the year 1876 the two competitors didn't meet in that year; there are also fictional meetings of Johnson with Wyatt Earp and Robert Louis Stevenson.
- Stated as 'FIRST EDITION' on the copyright page.
- The copyright is assigned for the year 2017 to 'Crichton Sun LLC'.
- First printing according to the no. line '17-21 LSC 10-1' on the copyright page.
- Day of publication from Amazon.com.
- There are 6 unpaginated pages preceding p. 1..
- A note 'About the Author' appears on p. [296].
- The cover illustration and the cover design are credited to Staehle on the back flap.
- The map is credited to Springer on the copyright page.
- "DESIGNED BY Lucy Albanese" is stated on the copyright page.
- The price is stated on the front flap.
