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The most diverse assemblage are the labyrinthodonts, consisting of temnospondyls and anthracosaurs.
However, some Triassic temnospondyls , such as Laidleria, exhibit the pattern of Dendrerpeton, with the jugal and prefrontal broadly sutured, and the orbits well back on the skull.
If frogs and salamanders both evolved from temnospondyls , and amniotes from anthracosaurs, then these amphibian orders did have a more recent common ancestry than either had with amniotes.
Many Carboniferous temnospondyls appear to have been primarily terrestrial in habits, with strong limbs, but no lateral line canals.
At this point, temnospondyls , lepospondyls and reptilomorphs diverged.
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