Heimildir/Sources

https://is.wikipedia.org/wiki/Devont%C3%ADmabili%C3%B0

https://en.wikipedia.org/wiki/Devonian

https://en.wikipedia.org/wiki/Adelophthalmus

https://en.wikipedia.org/wiki/Hyneria

https://en.wikipedia.org/wiki/Coccosteus

https://en.wikipedia.org/wiki/Amphiaspidida

https://en.wikipedia.org/wiki/Jaekelopterus

https://en.wikipedia.org/wiki/Romundina

https://en.wikipedia.org/wiki/Petalichthyida

https://en.wikipedia.org/wiki/Eastmanosteus

https://en.wikipedia.org/wiki/Dunkleosteus

https://en.wikipedia.org/wiki/Tiktaalik

https://en.wikipedia.org/wiki/Ichthyostega

https://en.wikipedia.org/wiki/Archaeopteris

https://en.wikipedia.org/wiki/Baragwanathia

https://en.wikipedia.org/wiki/Drepanophycus

Myndir:

https://www.flickr.com/photos/68276253@N03/6214117293

https://commons.wikimedia.org/wiki/File:Devonianfishes_ntm_1905_smit_1929.gif

https://en.wikipedia.org/wiki/Adelophthalmus

https://en.wikipedia.org/wiki/Hyneria

https://en.wikipedia.org/wiki/Coccosteus

https://en.wikipedia.org/wiki/Amphiaspidida

https://en.wikipedia.org/wiki/Jaekelopterus

https://en.wikipedia.org/wiki/Romundina

https://en.wikipedia.org/wiki/Petalichthyida

https://en.wikipedia.org/wiki/Eastmanosteus

https://en.wikipedia.org/wiki/Dunkleosteus

https://en.wikipedia.org/wiki/Tiktaalik

https://en.wikipedia.org/wiki/Ichthyostega

https://en.wikipedia.org/wiki/Archaeopteris

https://en.wikipedia.org/wiki/Baragwanathia

https://en.wikipedia.org/wiki/Drepanophycus