The fossilized remains are generally well preserved , with the famous fossil by which the significance of this species was discovered being found by Jennifer A. Clack in East Greenland in 1987 , though fragments of the skull had been discovered in 1933 by Gunnar Säve-Söderbergh and Erik Jarvik .
fragments of the skull had been discovered in 1933 by Gunnar Säve-Söderbergh and Erik Jarvik .