I've seen before such rectangles or halfly rectrangle "collars". It's rare, but life almost always succeeds in that what it's doing (when growing those. The complex/community knows, where a part lacks, and builder-parts, that has the form of charnia/leaf, know what to do and what to be. In picture, the builder-parts are like baseball bats. They... want to give their stiff genes to some of the coming larvas. The "fetus-sack" in the center would have been connected to the nest-formers. The latter would die in the end of the process. This is what I've concluded so far. Tell me if I am wrong.).
It should not be too difficult, to go and take pictures of those. Giant slime-vein-mother is generous to its babies. This is a real photo of real world, not my drawing. Earlier I wondered, why we don't have any more those pipes: They were parts of the giant slime-veins. It doesn't live any more - or if does, it's somewhere deep, under sea-bottom, or so. Hmm... it seems, like they are sucking charnia-leaves... Are they? Anyway, there are pipes. ... Hmm... Mountains are 10 times younger than fossiles of Cambri-period... creatures are quite modern, not old.
KORJAUS: "PANDORAN LIPPAAN" YHDEN PYÖREÄN KANNEN KOKO ON 200 METRIÄ. Mitä lienee... näytti ihan kansilta.
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