The Magic School Bus In the Time of the Dinosaurs software adaptation (The Magic School Bus Explores in the Age of Dinosaurs), unlike the book (The Magic School Bus In the Time of the Dinosaurs) and the TV episode (The Busasaurus) adapted from the book version, the Bus however transforms into three different prehistoric animals (one for each of the time periods) instead of a time machine. It transforms into three different prehistoric animals; a Coelophysis (for the Triassic Period), Stegosaurus (for the Jurassic Period), and Pteranodon (for the Cretaceous Period). This game has very elaborate CGI forms for the bus. Although the classroom location song has changed in the
Mesangiospermae are fossil mesangiosperms from the Hauterivian stage of the Cretaceous period. Molecular clock comparisons of DNA sequences indicate that the mesangiosperms originated between 140 and 150 Mya (million years ago) near the beginning of the Cretaceous period. This was about 25 Ma (million years) after the origin of the angiosperms in the mid-Jurassic. By 135Mya, the mesangiosperms had radiated into 5 groups: Chloranthales, Magnoliids, Monocots, Ceratophyllales, and Eudicots. The radiation into 5 groups probably occurred in about 4 million years. Because the interval of this radiation (about 4 million years) is short in proportion to its age (about 145 million