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Siphonotretacea (disused)
Taxonomy
Siphonotretacea was named by Kutorga (1948).
It was assigned to Acrotretidina by Holmer (1986); and to Siphonotretida by Holmer (1989).
It was assigned to Acrotretidina by Holmer (1986); and to Siphonotretida by Holmer (1989).
Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Superfm. †Siphonotretacea Kutorga 1948
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Diagnosis
No diagnoses are available