Dit artikel werd samengesteld op basis van meerdere nieuwsbronnen.

Palaeontologists have found new evidence that the early ancestors of amphibians, reptiles and mammals did not have a larval stage with external gills like modern frogs or salamanders

Draftartikel opgebouwd uit meerdere gegroepeerde nieuwsbronnen. Palaeontologists have found new evidence that the early ancestors of amphibians, reptiles and mammals did not have a larval stage with external gills like modern frogs or salamanders