Cesuru of paleontology! In a paper published this week, paleontologists published a 3D reconstruction of an ancient echinoderm fossil (430 million years ago). The authors say they identified it as a new species and named it "Cesuru": Sollasinacthulhu after the shape of its tentacle system.

the fossil model of 3D reconstruction in this paper is as follows:

there is another restored image, which does look quite Cesuru's.

(photo source: ElissaMartin,YalePeabodyMuseumofNaturalHistory)

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the echinoderms we are familiar with include sea cucumbers, sea urchins and starfish. Other living echinoderms include sea snake tails and sea lilies. This Cesuru species belongs to an extinct class of echinoderms: ophiocistioids. The three-dimensional reconstruction of the fossil shows the structure of its water pipe system, a "hydraulic system" in echinoderms, and can also help researchers learn more about the evolutionary history of such animals.

but what I really want to say is. Do you know what's going on with the Cesuru in the picture? 3D reconstruction of it requires first taking section photos layer by layer, and the way to take these images is to first cut the fossils into seven pieces, then grind them off layer by layer with a thickness of 30 μ m per layer, and take pictures of the ground sections. In other words, it has become a powder in the study.

in addition, although the appearance is magic, the size of this paleontological creature is actually very cute, about 3 centimeters wide. The following paper diagram with a scale is all 5mm, so it's actually a cute mini tentacle (

original paper: https://royalsocietypublishing.org/doi/10.1098/rspb.2018.2792#d3e546