Developed by Bastrop Independent School District, Texas. Lair A wealth of information, visuals, and videoclips related to dinosaurs and paleontology. Sponsored by the Illinois Department of Natural Resources. Back to Top Click on any of the vocabulary words below to hear them pronounced and used in a sentence. Angiosperms first appeared at the end of the Jurassic period.
Gymnosperms produce seeds in cones.
A plant-eating animal. Most Triassic dinosaurs were plant eaters or herbivores. Dinosaurs became increasingly abundant during the Jurassic period. The pistil of a flower contains the ovary. Giant tree ferns grew in the coal forest of the Carboniferous period.