{{Short description|Extinct family of molluscs}} {{Automatic taxobox | display_parents = 2 | taxon = Khairkhaniidae | authority = Missarzhevsky, 1989<ref>{{in lang|ru}} Missarzhevsky. (after 10 July) 1989. ''Drevneishie skeletnye okamenelosti i stratigrafiia pogranichnykh tolshch Dokembriia i Kembiia''. (English translation: ''Oldest skeletal fossils and stratigraphy of Precambrian and Cambrian boundary beds''.) Trudy Geologicheskogo Instituta, Akademia Nauk SSSR<!-- Academy of Sciences of the USSR -->, 443, 237 pp., 32 plates. Khairkhaniidae is on the page 180.</ref> | subdivision_ranks = Genera | subdivision = See text | synonyms = }}
'''Khairkhaniidae''' is an extinct family of Paleozoic fossil molluscs of uncertain position. They are thought to belong to either the Gastropoda or Monoplacophora. They possess planispiral coiled shells with a columnar microstructure.<ref>{{Cite journal | doi = 10.1134/S0031030106010035 | title = On the genus Auricullina Vassiljeva, 1998 and shell pores of the Cambrian helcionelloid mollusks | year = 2006 | last1 = Parkhaev | first1 = P. Y. | journal = Paleontological Journal | volume = 40 | issue = 1 | pages = 20–06| bibcode = 2006PalJ...40...20P }}</ref>
== 2005 taxonomy == The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005<ref name="Bouchet">Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. ''Classification and nomenclator of gastropod families''. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. {{ISBN|3-925919-72-4}}. ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278</ref> categorizes Khairkhaniidae within the Paleozoic molluscs of uncertain systematic position. This family is unassigned to superfamily. This family has no subfamilies.
== 2006–2007 taxonomy == According to the P. Yu. Parkhaev, the Khairkhaniidae is the only family in the order Khairkhaniifomes within the subclass Divasibranchia.
* Class Helcionelloida ** Subclass '''Divasibranchia''' Minichev & Starobogatov, 1975 *** Order '''Khairkhaniifomes''' Parkhaev, 2001 **** Family '''Khairkhaniidae''' Missarzhevsky, 1989
== Genera == Genera in the family Khairkhaniidae include: * ''Khairkhania'' Missarzhevsky, 1981 - type genus of the family Khairkhaniidae ** ''Khairkhania rotata'' Missarzhevsky, 1981 * Barskovia
== References == {{Reflist}}
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Category:Helcionelloida
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