Can confirm, hyoliths are Mammoth Cones.

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For here's Haplophrentis carinatus from Stanley Glacier (#BurgessShale) with feeding tentacles preserved. This was a key that provided a link between and and it may have a cameo in my upcoming NPGS talk...
https://t.co/85Hb9E961N

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The mystery of hyoliths, cone-shaped animals that lived during the Paleozoic, seems to be solved https://t.co/0F25R0FBKH

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An analysis of fossilized soft tissues confirms hyoliths belong to a group of invertebrates known as Lophophorata https://t.co/xez0Inkhkx

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