The lizard has been named after a Vedic god that was swallowed whole by a dragon during a battle.
Scientist studied tiny, transparent fish to learn more about sleep.
This suggests some lizards can "hedge their bets" reproductively, taking a punt on both eggs and live-born babies.
"Completely unexpected" Triassic creature overthrows many ideas about life on Earth 200 million years ago.
The difference between the two incubation environments was just 3 degrees Celsius.
The dragon-like wood-lizards were discovered in the Andes in Ecuador and Northern Peru.