I'll copy paste from a comment I made on another post:

The X-rays have been rebutted by people with a basic in biology. The finger bones are the result of someone mismatching bones from different animals, the phalanges are hurriedly placed contrary to skeletal compositions, alot of them are upside down and in the wrong place - there are femurs and tibias in place of the arms and many more obvious anomalies that point to complete fabricated construction.

A side note: many are claiming this is the Mexican military presenting, it is not. Footage of the UFOs/UAP are real but these "bodies" are an insult to intelligence.