Meet Edestus Giganteus and Helicoprion. The Edestidae family of sharks had a single row of teeth in the upper and lower jaws, creating, in effect, a scissors. Helicoprion's teeth grew in a buzz-saw shaped whorl in the lower jaw! Both sharks are known only from their fossil teeth, leading to mystery and detective work. [more inside]
posted by peachfuzz on Jan 27, 2010 - 10 comments

The fungi fire their spores up to 55 miles an hour–which translates to an acceleration of 180,000 g. Research from the lab of Nicholas Money. Music video by Dr. Money's students. (SLYT) via
posted by Slithy_Tove on Oct 5, 2008 - 18 comments