University of Toronto graduate student Martin Smith has for the first time reconstructed mouthparts of two mollusk-like animals Odontogriphus and Wiwaxia that lived in Cambrian seas 500 million years ago. Artist’s reconstruction of Wiwaxia (Nobu Tamura / Spinops.blogspot.com / CC BY-SA 3.0) The radula sounds like something from a horror movie – a conveyor belt lined with hundreds of rows of interlocking teeth. In fact, radulas are found in the...
