Tiktaalik fossil discovery reveals how fish first walked onto land

Tiktaalik, a 375-million-year-old fossil, reveals key adaptations in ribs and pelvis that paved the way for the evolution of walking on land.

Oncorhynchus Clarkii -- Earthpedia animal

Tiktaalik fossils reveal how fish evolved into four-legged land

The Ancient Fish That Got Cold Feet and Returned to Water

Tetrapods – News, Research and Analysis – The Conversation – page 1

This bizarre sea creature lived half a billion years ago •

Triturus Cristatus -- Earthpedia animal

Fish fingers and bilateral symmetry — new fossils shed light on

An Ultimate Guide to Tiktaalik: The Land-Walking Fish

Complex tail regeneration has been discovered in alligators

Life Onto Land' exhibit at Academy of Natural Sciences highlights

Dolphin DNA study reveals adaptations to local oceanography

Fossil fish discovery shows link from fins to legs - Los Angeles Times