Late Cretaceous Texas, 75 million years ago In the park, near the Time Portal site there is a crocodile enclosure. There is a suspension bridge across it (the simple sort where the footway follows the catenary); Bob walks across it to feed the Nile crocodiles in the lake. Nigel plans to add a Deinosuchus, an ancient species of giant crocodilian (more closely related to alligators than crocodiles) which measures 50 feet long and weighs up to 9 tons, to the park. Bob mutters that Nigel may have bitten off more than he can chew this time. In a jeep, Nigel goes through the Time Portal to the Cretaceous in Texas, where Dallas is now. At this time North America is divided into three land areas by a Y-shaped internal epicontinental sea. The land around the Time Portal exit point is dry: gravelly sand with patches of trees and bushes...