Igai

Igai had air sacs inside its backbone bones, making them light and spongy, which helped it grow so large.2

Its fifth metacarpal (a bone in the hand) had two unique bumps on the inner side that no other titanosaur has.2

Igai was more slender than many other titanosaurs, with leg bones that were relatively thin and graceful.2

The first and second metatarsals (foot bones) had deep grooves on their upper surfaces, a feature not seen in other titanosaurs.2

Igai lived about 74 million years ago, during the Campanian stage of the Late Cretaceous.2

Igai was probably bigger than its close relative Mansourasaurus, which was about 8 to 10 metres long.2