Complex sentence: Undifferentiated tepals are thought to be the ancestral condition in flowering plants, for example, "Amborella", which is thought to have separated earliest in the evolution of flowering plants, has flowers with undifferentiated tepals.
Split into simpler sentences: Undifferentiated tepals are thought to be the ancestral condition in flowering plants. For example, "Amborella", which is thought to have separated earliest in the evolution of flowering plants, has flowers with undifferentiated tepals.