The last last Labrinthodonts


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The last last Labrinthodonts

Following the 1983 publication of “The Last Labyrithodont?” Siderops kehli was the latest evidence of an extinct giant amphibian in Australia, dating to the early Jurassic. However, a mere 14 years later the entire geological record was extended a further eighty million years into the Early Cretaceous, when the last last labyrinthodont, Koolasuchus cleelandi was published.

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Occasionally in palaeontology, an established idea can be overturned by a single amazing discovery. This is particularly true when you are talking about the range in geological time of a particular species, or of a larger group of species. Think of it this way: the known range in time of a particular group of species is bookended by the oldest and youngest records of that group. By finding a fossil that is younger than the youngest, or older than the oldest, known record of that group, you extend that group’s known time range.

AAOD Journal Issue 15 (2017) – pages 22 to 29 
By Dr Anne Warren

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