{{Short description|Family of single-celled organisms}} {{Automatic_taxobox | name = Involutinida | fossil_range = Early Permian - Cenomanian. | taxon = Involutinidae | authority = | subdivision_ranks = Subfamilies | subdivision = See text }} The '''Involutinidae''' are a family of foraminifera<ref name=C-S>[http://www.cladocera.de/protozoa/cavalier-smith_2004_prs.pdf Only Six Kingdoms of Life] Cavalier-Smith, 2004</ref> included in the Involutinida, characterized by calcareous tests consisting of an undivided planispirally to trochospirally coiled tubular second chamber wound around the initial proloculus, and which may have thickenings or nodes on one or both sides. This family includes four subfamilies, Aulotortinae, Involutininae, Triadodiscinae, and Triasininae.<ref>[http://www.gsi.ir/General/Lang_en/Page_48/SubOrderId_1399/SuperFamilyId_/FamilyId_1400/Action_FamilyView/INVOLUTINIDAE.html Involutinidae] {{Webarchive|url=https://web.archive.org/web/20151208173043/http://www.gsi.ir/General/Lang_en/Page_48/SubOrderId_1399/SuperFamilyId_/FamilyId_1400/Action_FamilyView/INVOLUTINIDAE.html |date=2015-12-08 }} Loeblich & Tappan 1988 in GSI e-book</ref>
The Involutinidae were previously included in the ''Treatise on Invertebrate Paleontology ''Part C, 1964.<ref>{{cite book |authorlink=Alfred R. Loeblich Jr |authorlink2=Helen Niña Tappan Loeblich |first=Alfred R. |last=Loeblich |first2=Helen |last2=Tappan |title=Protista 2: Sarcodina Chiefly "Thecamoebians" and Foraminiferida |url=https://books.google.com/books?id=HJSotN7FA-sC |year=1964 |publisher=Geological Society of America |isbn=978-0-8137-3003-5 |volume=C |edition=5th |series=Treatise on Invertebrate Paleontology |editor-first=R.C. |editor-last=Moore }}</ref>
==References== {{reflist}}
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Category:Spirillinata Category:Foraminifera families