1. The fossil record is silent about the 20 million years immediately following Ichthyostega . 2. Whether these traits were independently evolved in " Ichthyostega " is debated. 3. This projection is also seen in the Late Devonian tetrapod " Ichthyostega ". 4. Comparisons between the skeletal features of Acanthostega and Ichthyostega reveal that they had different habits. 5. His research on the Devonian tetrapod " Ichthyostega " was continued by Erik Jarvik. 6. The oldest near-complete tetrapod fossils, Acanthostega and Ichthyostega , date from the second half of the Fammennian. 7. In panderichthyids and " Ichthyostega " ribs are attached to the neural arch and there is an intercentrum. 8. Ichthyostega means " fish plate " because the roof of its skull was shaped like that of a fish.9. A 2012 study using 3D reconstructions of " Ichthyostega " concluded that it was incapable of typical quadrupedal gaits. 10. The most complete skeletal material of an early amphibian tetrapod is the Ichthyostega , found in Greenland and dated 362 million years old.
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