From the mouths of molluscs -- ancient snail relative found
This is a reconstruction of the Odontogriphus mouthparts. 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 mouths of most molluscs, from the giant squid to the garden snail. Now, a "prototype" radula found in 500-million-year-old fossils studied by University of Toronto graduate student Martin Smith, shows that the earliest radula was not a flesh-rasping terror, but a tool for humbly scooping food from the muddy sea floor.
From the mouths of molluscs -- ancient snail relative found
Fossils of toothy, slug-like creatures that grazed the sea floor 500 million years ago have shed light on the origins of modern-day snails, shellfish and squid, a study said Wednesday.
Wed 22 Aug 12 from Phys.org
Scary Mollusk Mouths Had Humble Beginnings
The earliest mollusks slurped up mud-covered food from the sea floor.
Wed 22 Aug 12 from Livescience
Ancient fossils reveal how the mollusc got its teeth
This is a reconstruction of the Odontogriphus mouthparts. The radula sounds like something from a horror movie – a conveyor belt lined with hundreds of rows of interlocking teeth. In fact, ...
Wed 22 Aug 12 from Biology News
Ancient fossils reveal how the mollusc got its teeth, Thu 23 Aug 12 from Labspaces.net
Ancient fossils reveal how the mollusc got its teeth, Wed 22 Aug 12 from e! Science News
Ancient fossils reveal how the mollusc got its teeth, Wed 22 Aug 12 from ScienceDaily
Ancient fossils reveal how the mollusc got its teeth, Wed 22 Aug 12 from Eurekalert
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