Unearthed: the cannibal sharks of a forgotten age

Scientists have discovered macabre fossil evidence suggesting that 300 million-year-old sharks ate their own young, as fossil faeces of adult Orthacanthus sharks contained the tiny teeth of juveniles.

Soft-shelled turtles urinate through mouth

Chinese soft-shelled turtles are exquisitely adapted to their aquatic lifestyle, sitting contentedly on the bottom of brackish muddy swamps or snorkelling at the surface to breath. According to Y. K. Ip from the National ...

Why the swamp sparrow is hitting the high notes

Birdsongs are used extensively as models for animal signaling and human speech, offering a glimpse of how our own communicating abilities developed. A new study by Adrienne DuBois, a graduate student at the University of ...

A minute crustacean invades the red swamp crayfish

The small ostracod Ankylocythere sinuosa measures no more than half a millimetre in length and lives on other crayfish. And, Spanish scientists have discovered it for the first time in Europe. The finding suggests that it ...

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