Yeah, I know. They explained why that is on Star Trek.
These effigies are topologically human, that is, they have a cylindrical trunk topped by a head, with two arms at one end and two legs at the other. And the head has a mouth under the nose, and two eyes on either side of the nose. In other words, the basic body plan is identical to ours, but the size and proportions are somewhat different.
If these are not a deliberate fraud, then they are probably sort of native totem dug up after having been made by Indians hundreds of years ago (they are supposedly from Peru, where ancient civilizations mummified their dead for ceremonial reasons). But these don’t look like mummies, they look more like carvings, or statues. Still, I can’t really tell from the pictures.
What they don’t look like is life forms from another world, with an independent evolution and origin to ours. They look just like what someone who is not very bright would expect aliens to look like: weird little people. All that’s lacking is the silver jumpsuits, the oddly accented English, and the theremin music.