The mass extinction event that killed the dinosaurs was sudden and just as deadly to life in the polar regions, according to a study of more than 6,000 marine fossils from the Antarctic.
The research involved a six-year process of identifying more than 6,000 marine fossils ranging in age from 69- to 65-million-years-old that were excavated by scientists from the University of Leeds in the UK and the British Antarctic Survey on Seymour Island in the Antarctic Peninsula.
This is one of the largest collections of marine fossils of this age anywhere in the world. It includes a wide range of species, from small snails and clams that lived on the sea floor, to large and unusual creatures that swam in the surface waters of the ocean.