Editing Seta (section)

=== Classification uncertain ===
In 2017, a description of a new species of basal [[deuterostome]] called ''[[Saccorhytus]]'' was published. This animal appears to have seta in the pores along the side of its body.<ref name="HanMorris2017">{{cite journal |last1=Han |first1=Jian |last2=Morris |first2=Simon Conway |last3=Ou |first3=Qiang |last4=Shu |first4=Degan |last5=Huang |first5=Hai |year=2017 |title=Meiofaunal deuterostomes from the basal Cambrian of Shaanxi (China) |journal=Nature |volume=542 |issue=7640 |pages=228–231 |bibcode=2017Natur.542..228H |doi=10.1038/nature21072 |issn=0028-0836 |pmid=28135722 |s2cid=353780}}</ref> However, in 2022, ''Saccorhytus'' is considered to be an early [[Ecdysozoa|ecdysozoan]], and was described as having "lacked setae".<ref>{{Cite journal |last1=Liu |first1=Yunhuan |last2=Carlisle |first2=Emily |last3=Zhang |first3=Huaqiao |last4=Yang |first4=Ben |last5=Steiner |first5=Michael |last6=Shao |first6=Tiequan |last7=Duan |first7=Baichuan |last8=Marone |first8=Federica |last9=Xiao |first9=Shuhai |last10=Donoghue |first10=Philip C. J. |date=2022-08-17 |title=Saccorhytus is an early ecdysozoan and not the earliest deuterostome |url=https://www.nature.com/articles/s41586-022-05107-z |journal=Nature |volume=609 |issue=7927 |language=en |pages=541–546 |doi=10.1038/s41586-022-05107-z |pmid=35978194 |bibcode=2022Natur.609..541L |s2cid=251646316 |issn=1476-4687|hdl=1983/454e7bec-4cd4-4121-933e-abeab69e96c1 |hdl-access=free }}</ref>