L-chondrite breakup might have contributed to Ordovician biodiversification
(PHYSorg.com Archaeology & Fossils)

About 466 Mya, a major impact event took place between the orbits of Mars and Jupiter. Space dust spread all across the Solar System, and some of it was found near Saint Petersburg, Russia, and in the south of Sweden. An international team of researchers investigating the outcomes from the event shared their results in Science Advances.