Like some of you, am guessing it is a kind of prehistorical Antlion. Why? cause it seem to be able to trap thing while burying itself (like antlion). Also the adult contemporary version of the actual antlion is the dragonfly, so in ARK that would be the Meganeura.
Am just concerned about it size( if it is really an antlion), which may looks like a bit bigger than meganeura. As shown on the Mysterious Mysteries file pieces, it seems to be able to trap dinos. Would ok to me if it traps only dinos like dilo or similar sized dinos.
