Controversies in Evolution: 'Jurassic beaver' unearthed in China

‘Jurassic beaver’ unearthed in China: Fossil overturns ideas about mammals’ lowly status in dinosaur era

Another evolutionary Icon ‘bites the dust’

For years, the mammals living in the era of dinosaurs have been thought of as tiny shrewlike creatures scurrying through the underbrush. Now the discovery of a furry aquatic creature with seallike teeth and a flat tail like a beaver has demolished that image.

Ji Q., Luo Z.-X., Yuan C.-X.& Tabrum A. R. . Science, 311. 1123 - 1127 (2006).

See also Jurrassic Beaver swims into view Nature News, Michael Hopkin