Article · Wikipedia archive · Last revised Jun 3, 2026

Cornuspiroidea

Cornuspiroidea are globular, marine invertebrates belonging to the superfamily foraminiferan. The shell may be free or attached, planispiral or trochospiral, evolute or involute, spreading or discoidal. The proloculus, or initial chamber, is followed by undivided spiral passage or enrolled tubular chamber, later may be irregularly coiled, unicoiled, or show zigzag growth pattern and may be distinctly chambered. The shell wall is composed of imperforate porcelaneous calcite, a character of the Miliolida

Last revised
Jun 3, 2026
Read time
≈ 1 min
Length
231 w
Citations
3
Source
Wikipedia ↗
Cornuspiroidea
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Sar
Clade: Rhizaria
Phylum: Retaria
Subphylum: Foraminifera
Class: Tubothalamea
Order: Miliolida
Suborder: Miliolina
Superfamily: Cornuspiroidea
Schultze, 1854 nom. transl. Bogdanovich in Subbotina et al., 1981
Families1

Cornuspiridae
Hemigordiopsidae
†Neodiscidae

Cornuspiroidea are globular, marine invertebrates belonging to the superfamily foraminiferan. The shell may be free or attached, planispiral or trochospiral, evolute or involute, spreading or discoidal2. The proloculus, or initial chamber, is followed by undivided spiral passage or enrolled tubular chamber, later may be irregularly coiled, unicoiled, or show zigzag growth pattern and may be distinctly chambered. The shell wall is composed of imperforate porcelaneous calcite3, a character of the Miliolida

Families and genera in the Cornuspiroidea were removed from the Milioloidea where they appear in the Treatise Part C (Loeblich & Tappan 1964).

References

References

  1. Hayward BW, Cedhagen T, Kaminski M, Gross O, eds. (2025). "Cornuspiroidea Schultze, 1854 nom. transl. Bogdanovich in Subbotina et al., 1981". World Modern Foraminifera Database. World Register of Marine Species. Retrieved 2 May 2025.
  2. "The Neogene forams". www.sepmstrata.org. Retrieved 2026-04-23.
  3. Vachard, Daniel; Le Coze, François. "Carboniferous smaller Foraminifera: convergences and divergences". Geological Society, London, Special Publications. 512 (1): 247–326. doi:10.1144/SP512-2020-42. Retrieved 2026-04-23.
  • A.R. Loeblich Jr and Helen Tappan, 1964. Sarcodina Chiefly "Thecamoebians" and Foraminiferida; Treatise on Invertebrate Paleontology, Part C Protista 2. Geological Society of America and University of Kansas Press.
  • A.R. Loeblich Jr and Helen Tappan,1988.

Forminiferal Genera and their Classification.