Log In

Grades

Subjects

Info

Grades

6-12

Accessibility

Auditory, Visual

Permitted Use

Stream Only


Part of Evolution Series
159 Favorites
2913 Views
Average of one rating: 3 stars

Fish with Fingers

Paleontologist Jenny Clack thought the textbook story of tetrapod evolution was implausible: How could fishlike creatures, stranded on land, somehow evolve limbs and survive to become the first tetrapods? The search for an answer took her to Greenland, where she found one of the earliest known tetrapods, called Acanthostega. With its fishlike tail and gills, it was certainly adapted to an aquatic environment, but its paddle-shaped fins end in tiny fingers. Vertebrates, it turns out, grew fingers before they left the sea. From Evolution: "Great Transformations."

Producer: None
Contributor:
Funder:
Producer:

You must be logged in to use this feature

Need an account?
Register Now