A novel by Lee Grimes
Members of the scientific Pegasus Expedition journey back in time to the Late Cretaceous, before the extinction of the dinosaurs, and come face to face with the Heesh, alien reptilian creatures who had evolved from the dinosaurs on a parallel Earth.
Used availability for Lee Grimes's Dinosaur Nexus
October 1994 : USA Paperback
Title: Dinosaur Nexus
Author(s): Lee Grimes
ISBN: 0-380-77319-8 / 978-0-380-77319-0 (USA edition)
Publisher: Avon Books