Latest Rudists Stories
The world's reefs are hotbeds of biological diversity, including over 4,500 species of fish. A new study shows that the ancestors of these fish colonized reefs in two distinct waves, before and after the mass extinction event about 66 million years ago that wiped out the dinosaurs.
An international research team, with Spanish participation, has discovered a new species of mollusk, Polyconites hadriani, in various parts of the Iberian Peninsula.
- In medieval musical notation, a sign or neume denoting a shake or trill.