Insect and Spider Identification: Found on a cement picnic table 15 feet from a wide creek., 2 by liljennifer

liljennifer wrote:
I became aware of this bug by my leg as I was eating... At the time I was too scared to look at it closely and assumed it was some sort of insect with a lizard like tail. I took a short video of it with my phone, and when looking back, noticed a line on its back. The only thing that it moved was its antennas... But I think it was the wind. This could be an insects exoskeleton... The question is... What is/ was it? Everyone I have showed it to is stumped.