dinosaurs among animals on land and gymnosperms among plants
dinosaurs
During the Tertiary period, dominant organisms included early mammals, large birds, marine mammals like whales and dolphins, and diverse plant species. This period saw the rise of modern mammals, along with the evolution of grasslands, forests, and flowering plants. The Tertiary period also saw the decline of dinosaurs and the rise of more familiar animal groups.
dimetrodon was the dominANT SPECIES OF THE permian period
Metazoans were abundant during the Vendian Period.
dimetrodon and edaphosaurus
During the Jurassic Period, dominant organisms included dinosaurs such as Brachiosaurus, Stegosaurus, and Allosaurus. Other notable organisms included pterosaurs, marine reptiles like ichthyosaurs and plesiosaurs, and early mammals. The flora was dominated by conifers and ferns.
The dominant organisms during the carboniferous time period were plants. They were large, vascular, land plants that sometimes grew to be one hundred feet or more.
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.
it was the Crassigyrinus it was aguatic and had sharp teeth. == ==
Living organisms eat, reproduce, change over time, and create waste.
Early humans first appeared in the tertiary period, a long time after the cretaceous period.
Plants are not immortal and eventually succumb to the passage of time like all living organisms.