1) Transitional fossil
Found on
https://www.crosswordclues.com/clue/pachyrhachis
Pachyrhachis is an extinct genus of snake with well developed hind legs known from fossils discovered Ein Yabrud, near Ramallah, in the central West Bank. It is a relatively small snake, about 1 m (3–4 ft) long. Pachyrhachis appears to have been an ancient marine snake; the fossils occur in a marine limestone deposit, and the thickened bone of t...
Found on
http://en.wikipedia.org/wiki/Pachyrhachis
No exact match found.
