The pelvic fin and girdle of Panderichthys and the origin of tetrapod locomotion

Article Abstract:

The pelvic girdle is less tetrapod-like than that of the osteolepiform Eusthenopteron, but the pelvin fin endoskeleton shares derived characteristics with basal tetrapods despite being more primitive than the pectoral fin of Panderichthys. The evolution of tetrapod locomotion passed through a stage of body-flexion propulsion, in which the pelvic fins played a relatively minor anchoring part, before the emergence of hindlimb-powered propulsion in the interval between Panderichthys and Acanthostega.

Behavior, Vertebrates, Origin, Locomotion

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Media Safari

Article Abstract:

The movie Arctic Tale, available on DVD and HD DVD, is a story of Nanu and Seela, a polar bear cub and a walrus pup, and the difficulties they face in a rapidly melting ice-bound world. The book A Contract with the Earth, on the other hand, focuses on how entrepreneurship can solve environmental problems. Details of David S. Wilcobe's No Way Home: The Decline of the Word's Great Animal Migrations are suplied.

Digital video disk, DVDs (Digital videodisks), Science publishing, No Way Home: The Decline of the Word's Great Animal Migrations (Book), Arctic Tale (Video recording), A Contract with the Earth (Book)

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Poetry in motion: the lovely locomotion of dolphins

Article Abstract:

A series of photographs of dolphins are presented, taken off the coast of New Zealand. Highlights include the habitat and behavior of the dolphin.

Portrayals, Illustration, Dolphins, Dolphins (Mammals), Animal locomotion

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