The first scientist misidentified the fossil as that of a big cat. What body structure did he use to make his observations?

a giant sloth

Explanation:

i would say it is

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )