gigagantosaurus
The dinosaurs were the dominant land animals during the Jurassic and Cretaceous periods, rising to dominance during the late Triassic.
dinosaurs among animals on land and gymnosperms among plants
dinosaurs among animals on land and gymnosperms among plants
Reptiles were the primary large animals during the Cretaceous period. On land, there were dinosaurs, in the air were pterosaurs, and the oceans were inhabited by plesiosaurs and mosasaurs.
The common consensus is that dinosaurs dominated the land, being the most diverse large animals, and reaching huge sizes. In the oceans, large marine creatures included plesiosaurs, pliosaurs, ichthyosaurs (during the Jurassic and early Cretaceous), and mosasaurs (during the Cretaceous). The skies were ruled by pterosaurs. Coniferous trees were the primary large plants.
Early Paleozoic is pretty long time, so you have to be more specific about that. Probably one of the most dominant creatures that ever evolved was Anomalocaris (from Cambrian period). Most of the animals from that time couple of inches long, while Anomalocaris was 2 meters long. Also giant scorpions, like world famous Jaekelopterus rhenaniae were also top predators of it's days.
My cousin lenny
dinosaurs
I know that the angiosperms were most dominant during the cretaceous period but im not too sure about the dinosaurs dominant era. I would assume they were both dominant in the same era but I am not 100% sure.Read more: http://wiki.answers.com/Dinosaurs_and_angiosperms_were_dominant_lineages_during_with_geologic_era#ixzz1G5bqBpQR
Some animals during the cretaceous period were tapejara, microraptor, and velociraptor. There was also triceratops, styracosaurus, and the tyrannosaurus rex.
I know that the angiosperms were most dominant during the cretaceous period but im not too sure about the dinosaurs dominant era. I would assume they were both dominant in the same era but I am not 100% sure.
They were dominant during the mesozoic era, which was made up of the Triassic, Jurassic, and Cretaceous periods.