[kjam22]

Researchers have found tracks of a previously unknown, two-legged swimming dinosaur with birdlike characteristics in northern Wyoming and are looking for bones and other remains in order further identify and name it.

What do you understand it to mean when it says "birdlike characteristics".

"The swimming dinosaur had four limbs and it walked on its hind legs, which each had three toes," she said.

What have they found that says demonstrates there were two limbs that never touched the ground?

[Junior]

What do you understand it to mean when it says "birdlike characteristics".

"Bird-like characteristics" does not equal (!=) "part bird." Pteranodons had "bat-like wings." This does not mean they were part bat. What have they found that says demonstrates there were two limbs that never touched the ground?

There were no tracks of the forelimbs? Only two feet left the tracks, not four. This would indicate the dinosaur was bipedal, as indeed many dinosaurs were.