Tiktaalik roseae were tetrapod-like fish with flat head,
constriction like neck and fins which had basic wrist bones.
Three fossils were discovered in Arctic Canada,
but it is thought that it was tropical or subtropical climate
at the time that Tiktaalik lived, and they could crawl with
wrist-like fins in a river delta or a shallow water, come out of
the water, or venture briefly on land.

ブログ記事（新種の化石発見！陸にもっとも近い魚）

ブログ記事（最古の足跡〜四肢動物起源は海辺から）