1) Transitional fossil
Found on
https://www.crosswordclues.com/clue/ichthyostega
I. watsoni I. eigili == History and systematics == In 1932 Gunnar Säve-Söderbergh described four Ichthyostega species from the Upper Devonian of East Greenland and one species belonging to the genus Ichthyostegopsis, I. wimani. These species could be synonymous (in which case only I. stensioei would remain), because their morphological differenc...
Found on
http://en.wikipedia.org/wiki/Ichthyostega
genus of extinct animals, closely related to tetrapods (four-legged land vertebrates) and found as fossils in rocks in eastern Greenland from the ... [3 related articles]
Found on
http://www.britannica.com/eb/a-z/i/4
Ichthyostega were terrestrial tetrapods (having four-legs) that lived during the late Devonian period. These are the first tetrapods known to have ventrured onto land. These vertebrates were up to about 4 ft (1.5 m) long; they had a wide body, a fish-like skull, four strong, short legs, a massive ribcage, and a finned tail. Adults had no gills. Fos...
Found on
http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
No exact match found.
