Belongs within: Miliolida.
Contains: Cornuspiridae.
The Cornuspirida are a group of porcelaneous foraminiferans in which the free test has the proloculus followed by a single tubular, undivided chamber. The Hemigordiopsidae have the test streptospirally coiled in early stages.
<==Cornuspirida [Cornuspiracea, Cornuspiridea, Cornuspirideae, Cornuspiroida, Cyclogyrina]
|--HemigordiopsinaM13
| |--Shanitoidea [Shanitinidea]M13
| | |--Shanita Brönnimann, Whittaker & Zaninetti 1978YJ04 [ShanitidaeM13]
| | | |--*S. amosiYJ04
| | | |--S. bronnimanniYJ04
| | | |--S. chagouensisYJ04
| | | `--S. intercalariaYJ04
| | |--BaisalinidaeM13
| | | | i. s.: ‘Nikitinella’ Sosnina 1983 non Ilovaĭsky in Ilovaĭsky & Florensky 1941HW93
| | | | Pseudobaisalina Sosnina 1983HW93
| | | |--BaisalininaeM13
| | | `--Septagathammina Lin 1984HW93 [SeptagathammininaeM13]
| | `--NeodiscidaeM13
| | |--Uralogordius Gaillot & Vachard 2007M13
| | |--Glomomidiella Vachard et al. 2008M13
| | `--Neodiscus Miklukho-Maclay 1953W76
| | |--*N. milliloides Miklukho-Maklay 1953 [=Archaediscus milliloides]LT64
| | `--N. qinglongensis Wang 1976W76
| `--HemigordiopsideaM13
| |--HemigordiopsidaeM13
| | |--Turriglomininae [Turriglominidae]M13
| | |--Kamurana Altiner & Zaninetti 1977HW93 [KamuraninaeM13]
| | |--Hemigordiopsis Reichel 1945LT64 [HemigordiopsinaeM13]
| | | `--*H. renzi Reichel 1945LT64
| | |--Orthovertella Cushman & Waters 1928C40 [OrthovertellinaeM13]
| | | `--*O. protea Cushman & Waters 1928LT64
| | `--Meandrospira Loeblich & Tappan 1946LT64 [incl. Streblospira Crespin & Belford 1957LT64; MeandrospirinaeM13]
| | |--*M. washitensis Loeblich & Tappan 1946LT64
| | |--‘streblospira’ australae Crespin & Belford 1957CB57
| | |--‘Streblospira’ kimberleyensis Crespin & Belford 1957CB57
| | `--M. meandrina (Crespin & Belford 1957) [=*Streblospira meandrina]LT64
| `--Hemigordius Schubert 1908YJ04 (see below for synonymy)
| |--*H. schlumbergeri (Howchin 1895) [=Cornuspira schlumbergeri]LT64
| |--H. biconcavusYJ04
| |--H. calcarea Cushman & Waters 1928 [=*Hemigordiella calcarea]LT64
| |--‘*Ondogordius’ campanula Marie 1961LT64
| |--H. harltoniC40
| |--‘*Neoangulodiscus’ leischneri Kristan-Tollmann 1962LT64
| |--H. plautus Wang 1976W76
| |--H. renzi [incl. Gansudiscus irregularis, G. luquensis, G. orientalis]YJ04
| `--H. zaninettiaeYJ04
`--CornuspirinaM13
|--HoyenellidaeM13
`--CornuspiridaeM13
Hemigordius Schubert 1908YJ04 [incl. Hemigordiella Marie in Deleau & Marie 1961LT64, Neoangulodiscus Kristan-Tollmann 1962LT64, Ondogordius Marie in Deleau & Marie 1961LT64; HemigordiidaeM13]
*Type species of generic name indicated
References
[CB57] Crespin, I., & D. J. Belford. 1957. New genera and species of Foraminifera from the Lower Permian of Western Australia. Contributions from the Cushman Foundation for Foraminiferal Research 8 (2): 73–76.
[C40] Cushman, J. A. 1940. Foraminifera: Their classification and economic use 3rd ed. Harvard University Press: Cambridge (Massachusetts).
[HW93] Hart, M. B., & C. L. Williams. 1993. Protozoa. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 43–70. Chapman & Hall: London.
[LT64] Loeblich, A. R., Jr & H. Tappan. 1964. Sarcodina: chiefly “thecamoebians” and Foraminiferida. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt C. Protista 2 vol. 1. The Geological Society of America and The University of Kansas Press.
[M13] Mikhalevich, V. I. 2013. New insight into the systematics and evolution of the Foraminifera. Micropaleontology 59 (6): 493–527.
[W76] Wang K. 1976. The foraminifera from the Changhsing Formation in western Guizhou. Acta Palaeontologica Sinica 15 (2): 187–195.
[YJ04] Yang X., Jin X., Ji Z., Wang Y., Yao J. & Yang H. 2004. New materials of the Shanita-Hemigordius assemblage (Permian foraminifers) from the Baoshan Block, western Yunnan. Acta Geologica Sinica (English Edition) 78: 15–21.