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Siphusauctum : ウィキペディア英語版 | Siphusauctum
''Siphusauctum gregarium'' is an extinct filter-feeding animal that lived during the Middle Cambrian about 510 million years ago. Attached to the substrate by a holdfast, it had a tulip-shaped body, called the calyx, into which it actively pumped water that entered through pores and filtered out and digested organic contents. It grew to a length of only about . It was described in 2012 from numerous fossils recovered from the "Tulip Beds" strata of the Burgess Shale of Yoho National Park, British Columbia, Canada. The generic name comes Latin ''ラテン語:siphus'' ("cup" or "goblet") and ''ラテン語:auctus'' ("large"), referring to the general shape and size of the animal. The specific epithet comes from Latin ''ラテン語:gregalis'' ("flock" or "herd") referring to the large numbers of specimens recovered. It is the only species classified under the genus ''Siphusauctum'' and the family Siphusauctidae. ==References==
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