Q3: History of Life on Earth II - Mesozoic and Cenozoic Era Flashcards
This era is known as ‘Middle Life’, started more than 252 mil. yrs. ago and lasted until 66 mil. yrs. ago.
mesozoic era
Three geological periods of the mesozoic
- triassic
- jurassic
- cretaceous
The mesozoic era is considered as the Age of ____________ and Age of ____________.
- Dinosaurs
- Conifers
Which group of organisms dominated the triassic period?
- therapsids
- thecodonts
They are sometimes referred to as “mammal-like reptiles.”
therapsids
The ancestors of dinosaurs and crocodiles, together with lizards, turtles, flying pterosaurs, and the first true mammals.
thecodonts
These organisms became a dominant group in the triassic period.
mollusks
In which period did fishes, sharks, and marine reptiles such as plesiosaurs, nothosaurs, and ichthyosaurs started to swim in the seas.
triassic period
Which period did feathered dinosaurs first appear?
jurrasic period
These organisms dominated the jurassic period.
- sauropods
- theropods
This period is when the first true coral was formed.
jurassic period
Which plant dominated the jurrassic period?
cycads
These jurassic animals were characterized by their long necks and tails.
sauropods
These jurassic organisms are bipedal carnivorous dinosaurs.
theropods
In this period, which lasted from 144 mil. yrs. ago until 65 mil. yrs. ago, the terrestrial environment was dominated by the dinosaurs.
cretaceous period
Which period did flowering trees and placental mammals appeared?
cretaceous period
