Vertebrates in the sarcopterygian lineage eventually became fully terrestrial.Three sets of changes in this lineage promoted life on land.Two of these occurred early in the Tetrapodomorpha and are found in all tetrapods.One of these occurred later within the reptiliomorph branch of the tetrapodomorph lineage.Which one of the following is unique to the reptiliomorph lineage?

Question

Quizplus · Accepted Answer

The amniotic egg is unique to the reptiliomorph lineage and represents a key adaptation that facilitated life on land by providing an enclosed, protective environment for the developing embryo, reducing the dependency on water for reproduction.

Vertebrates in the Sarcopterygian Lineage Eventually Became Fully Terrestrial