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Find out how reptiles evolved from early amphibians, and the adaptations that allowed them to thrive on dry land.Key facts
- Amniotic eggs enclose embryos in multiple membranes and a semi-permeable shell.
- Amniotic eggs allow reptiles to reproduce on land, rather than having to return to water to lay their eggs.
- Unlike amphibians, reptiles hatch from their eggs as fully formed, miniature versions of the adult.
- Reptiles like dinosaurs, plesiosaurs and pterosaurs dominated life on Earth during the Mesozoic era.
Transcript
Late Devonian Period: 360 million years ago
Millions of years ago, early amphibians used their newly evolved limbs to step onto land for the first time but they couldn’t venture far from the shore.
They had soft skin that needed to be kept moist and they had to return to the water to …
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