While the early amniotes resembled their amphibian ancestors in many respects, a key difference was the lack of an otic notch at the back margin of the skull roof.
A key difference in amniotes is the lack of an otic notch at the back margin of the skull roof. While the early amniotes resembled their amphibian ancestors in many respects.
While the early amniotes resembled their amphibian ancestors in many respects. A key difference in amniotes is the lack of an otic notch at the back margin of the skull roof.
While the early amniotes resembled their amphibian ancestors in many respects. A key difference in amniotes is the lack of an otic notch at the back margin of the skull roof.