†order Siphonocladales Oltmanns 1904 (green algae)
Alternative spelling: Siphonocladiales
Parent taxon: Ulvophyceae according to Q. Tang et al. 2020
See also Nitecki 1970
Sister taxa: Bryopsidales, Cladophorales, Cyclocrinales, Ulvales, Vermiporella
Subtaxa: Proterocladus
Ecology: stationary epifaunal "photoautotroph"
Distribution: found only at Shileicun ( of China)