This article by Sean B. Carroll tells the story of the search for and discovery of Tiktaalik, an animal with a mix of fish and tetrapod features—a fishapod! It supplements the short film Great Transitions: The Origin of Tetrapods, starring Neil Shubin.
The article provides background information to the film, filling in additional details about Shubin's Arctic adventure. It also serves as non-fiction reading for the Common Core standards.
Appropriate for: all levels of high school and undergraduate biology.
MS Performance Expectations: MS-LS4-2
HS Performance Expectations: HS-LS4-1, LS4-2, LS4-4, LS4-5, HS-ESS1-5
HS Core Disciplinary Ideas: LS4.A, LS4.B, LS4.C, HS-ESS2.B
1.A.1, 1.A.2, 1.A.4, 1.B.1, 1.C.1, 1.C.3, 1.D.2, 4.B.3, 4.B.4
5.4, D2, D5