I don't know what it is, but it looks awfully symmetrical in an elaborate way, to just be undigested food. CZ has a photo gallery of bugs but I don't remember seeing that one.
I am surprised if that is all you are expelling, though maybe you are not seeing all that is coming out.
You might want to try the cayennne pepper challenge test in the link below to see if you get "white rice", or Tapeworm segments.
Apparently everyone has parasites & not just reachable in the GI tract, so a zapper or rife machine (if you are not on meds with the rife) may be very helpful, though maybe not for at least until a month after the Clarkia due to too much die off happening at one time.