KOMPAS.com – According to Theory Evolutionliving things emerge from the line evolution in a certain period of time. The life of reptiles and large creatures has existed since the Paleozoic era (around 540 to 250 million years ago).
Here is the order of time and how reptile life and large creatures appeared on earth.
The appearance of reptiles
Life first reptile first appeared in the Paleozoic era, precisely in the fifth period, namely the carboniferous period. First reptile on earth is Hylonomus lyelli, the result of the evolution of the amphibian Sauropsida.
Reported from Smithsonian MagazineHylonomus lyelli was the first vertebrate to be able to venture far from the water’s edge thanks to the evolutionary innovation of the amniotic egg.
Also read: Phylogeny Tree: Definition, Structure, and Groups of Organisms
Thus, these animals do not need to return to the water to reproduce (not dependent on water like amphibians).
Hylonomus lyelli was the first reptile to live on land, having a lizard-like shape with a length of about 20 to 30 cm.
The appearance of large creatures
Reptile life has existed since the Paleozoic era. However, large creatures such as dinosaurs only appeared in the Mesozoic era (about 250 to 65 million years ago), to be precise the Triassic period (early Mesozoic era).
Reported from Natural History Museumreptiles evolved in the hot and dry climate of the Triassic period and evolved into large creatures or first dinosaur on earth (about 230 million years ago).
Also read: Hints of Evolution
At that time, the earth was inhabited by various large living creatures such as prehistoric crocodiles, prehistoric turtles, various dinosaurs.
At the end of the Triassic period, very large dinosaurs began to appear. For example, Riojasaurus, Lessemsaurus, and pterosurus.
Dinosaurs survived for several hundred million years until their extinction. However, large living things were created from the evolution of dinosaurs as well as reptiles. Formed various modern species on earth including large mammals, according to their evolutionary line.
