Involutinidae

Involutinida; Temporal range: Early Permian - Cenomanian.
Scientific classification
Domain:	Eukaryota
(unranked):	SAR
(unranked):	Rhizaria
Phylum:	Retaria
Subphylum:	Foraminifera
Class:	Spirillinata
Order:	Involutinida
Family:	Involutinidae
Subfamilies
	See text

The Involutinidae are a family of foraminifera[1] 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.[2]

The Involutinidae were previously included in the Treatise on Invertebrate Paleontology Part C, 1964.[3]

References

Only Six Kingdoms of Life Cavalier-Smith, 2004
Involutinidae Loeblich & Tappan 1988 in GSI e-book
Loeblich, Alfred R.; Tappan, Helen (1964). Moore, R.C. (ed.). Protista 2: Sarcodina Chiefly "Thecamoebians" and Foraminiferida. Treatise on Invertebrate Paleontology. C (5th ed.). Geological Society of America. ISBN 978-0-8137-3003-5.

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[C-S-1] Only Six Kingdoms of Life Cavalier-Smith, 2004

[2] Involutinidae Loeblich & Tappan 1988 in GSI e-book

[3] Loeblich, Alfred R.; Tappan, Helen (1964). Moore, R.C. (ed.). Protista 2: Sarcodina Chiefly "Thecamoebians" and Foraminiferida. Treatise on Invertebrate Paleontology. C (5th ed.). Geological Society of America. ISBN 978-0-8137-3003-5.