Tetrapod Evolution

Brief Description

Click on one of the images below, then go forward or back in the evolutionary sequence

Main references:
Clack, Jennifer "Gaining Ground," 2002
Daeschler, Edward B., et al, "A Devonian tetrapod-like fish . . .", Nature, vol 440, 6 April 2006

Eusthenopteron
Late Devonian period, Northern Hemisphere

Lobe finned fish

Panderichthys
Late Devonian period, Northern Europe (Latvia)

Lobe finned fish 

Tiktaalik
Late Devonian period, Northern Canada

Lobe finned fish  

Acanthostega
Late Devonian period, East Greenland

Four-legged fish  

Ichthyostega
Late Devonian period, East Greenland

Four-legged fish with robust skeleton   

Eryops
Carboniferous

Massive alligator like amphibian