A very big Labrador!!
Researchers have found what could be the earliest known dinosaur to walk the Earth lurking in the corridors of London's Natural History Museum.
A mysterious fossil specimen that has been in the museum's collection for decades has now been identified as most likely coming from a dinosaur that lived about 245 million years ago - 10 to 15 million years earlier than any previously discovered examples.
The creature was about the size of a Labrador dog and has been named Nyasasaurus parringtoni after southern Africa's Lake Nyasa, today called Lake Malawi, and Cambridge University's Rex Parrington, who collected the specimen at a site near the lake in the 1930s.
The researchers believe Nyasasaurus probably stood upright, was a meter tall at the hip, 2-3 meters long from head to tail, and weighed 20-60 kg.