Simon Fraser University3 年
Reptiles: scales and the amniotic egg
Cornified scales of reptiles increased their capacity to live in terrestrial environments ... During the Carboniferous era, there were many amphibians; the first reptile evolved from labyrinthodont ...
Simon Fraser University3 年
Reptiles: scales and the amniotic egg
Cornified scales of reptiles increased their capacity to live in terrestrial environments ... During the Carboniferous era, there were many amphibians; the first reptile evolved from labyrinthodont ...