Fossil experts found what they think is the most dangerous place in the history of Earth. It is not a crime-ridden area or a war zone. It is an area of the Sahara Desert (1) .................... the Morocco-Algeria border.

It (2) .................... a scary place 100 million years ago.

The experts said it was (3) .................... of terrifying and ferocious predators, like those from Jurassic Park. They said it was the "most dangerous place in the history of planet Earth".

They base this on fossils (4) .................... in ancient rocks. A professor called the research, "the most comprehensive piece of work on fossil vertebrates from the Sahara in almost a century".

"This place was filled with absolutely enormous fish five times (5) .................... than today's." He said they had "fearsome" teeth. Dr Nizar Ibrahim, lead author of the report, said it was a very inhospitable place, "where a human time-traveller would not last very long". It provides "a window into Africa's age of dinosaurs". (adapted from www.breakingnewsenglish.com)