It's like a big microraptor, but instead of knocking you off your mount, it latches to your creature and tears it a new one.
You also get them by kidnapping their unborn children and raising them, like wyverns and rockdrakes.
Use a bola to bola your tribe mate then you will be fine
How to tame.
Step 1. Sneak up behind it.
Step 2. Pluck out a feather.
Step 3. Run and scream
Step 4. Respawn and try again.
ARK: Alright we got giant pigs, bees, sloths, manti, cats, etc. What else do we need?
Devs: GIANT ARCHAEOPTERYX
A rock drake, thyla, and a raptor all mixed into one horrifying creature. HEY YOU GET TO STEAL ITS EGG TO YAY
Alright Bob that's it! Bring the rex through here. Not far to the base now! Wait... What's that on the rex?
2 words FLUFFY RAPTOR all i need to say
Rex: I’m the best tame
Reaper: haha u suck scary alien go chomp chomp
Giga: hello foolish mortals
King Titan: I can’t be tamed but I’m still better than u smol giga
Deinonychus: excuse me, mates, I left my ten Titanosaur corpses around here.
King Titan: screams in fear.
-all other life forms have left the game-
Rockwell: Your not so tough little chicken raptor
Deinonychus: *does screech thing*
ROCKWELL HAS BEEN DEFEATED!
At least now the pin down attack will feel nice and soft with the extra feathers.