| 11. | The larvae have bushy external gills and usually paler color patterns than the adults.
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| 12. | At this time, the embryo has well-developed external gills and a spiral valve intestine.
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| 13. | Aquatic larvae have true teeth on both upper and lower jaws, and external gills.
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| 14. | When the embryo is long, it has external gills, undeveloped fins, and no pigmentation.
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| 15. | Another developmental change is the loss of external gills from juvenile stage to adulthood.
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| 16. | However, some fully mature temnospondyls also possess hyobranchial bones but did not have external gills.
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| 17. | Primarily terrestrial as adults, but their juvenile larval stage is entirely aquatic, having external gills.
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| 18. | The parents build a nest for the young, which resemble tadpoles and have four external gills.
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| 19. | In most cases, these are external gills, visible as tufts on either side of the head.
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| 20. | The eggs hatch after about six weeks; the larvae have external gills and are entirely carnivorous.
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