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Temporal range: Early Cambrian - Recent
Scientific classification
(unranked): SAR
(unranked): Rhizaria
Phylum: Granuloreticulosa
Subphylum: Foraminifera
Class: Monothalamea
Order: Allogromiida

Allogromida incertae sedis

The Allogromiida is an order of single-chambered, mostly organic-walled foraminiferans, including some that produce agglutinated tests (Lagynacea). Genetic studies indicate that some foraminiferans with agglutinated tests, previously included in the Textulariida or as their own order Astrorhizida, may also belong here. Allogromiids produce relatively simple tests, usually with a single chamber, similar to those of other protists such as Gromia. They are found as both marine and freshwater forms, and are the oldest forams known from the fossil record.


  • Alfred 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 & H. Tappan,1988. Forminiferal Genera and their Classification. [1]
  • Sen Gupta, 1999. Systematics of modern foraminifera in Modern Foraminifera, Sen Gupta (ed),1999.[2]. (For Kingdom Protista (or Protoctista) and Phylum Granuloreticulosa.)

Further reading[edit]

  • Gooday, Andrew; Hori, Saori; Todo, Yuko (23 August 2002). "Soft-walled, monothalamous benthic foraininiferans in the Pacific, Indian and Atlantic Oceans: aspects of biodiversity and biogeography". Deep-Sea Research Part I: Oceanographic Research Papers. 52 (1): 33–53. doi:10.1016/j.dsr.2003.07.002.