New dinosaur species from Chile had a unique slashing tail

Fossils found in Chile are from the bizarre dog-sized dinosaur species that had a unique slashing tail weapon, scientists reported (Luis Perez Lopez via AP)

Fossils found in Chile are from a strange-looking dog-sized dinosaur species that had a unique slashing tail weapon, scientists reported on Wednesday.

Some dinosaurs had spiked tails they could use as stabbing weapons and others had tails with clubs.