Spirocyclinidae

Spirocyclinidae
Temporal range: Early Jurassic - Eocene
Scientific classification
Domain: Eukaryota
Phylum: Retaria
Subphylum: Foraminifera
Class: Rotaliata
Order: Textulariida
Family: Spirocyclinidae
Munier-Chalmas, 1887
Genera

See text

Spirocyclinidae is a family of foraminifera included in the Order Textulariida, Class Rotaliata. Tests are variably discoidal, aggulitinated with calcareous or microgranular cement. Interiors are complex with chambers partially subdivided. Walls and septa are pierced with ramifying and anastomosing channels. The family presently includes the following genera; Spirocyclina, Anchispirocyclina, Haurania, Martiguesia, Pseudospirocyclina, Qataria, Reissella, Saudia, Sornayina, Spiraloconulus, Streptocyclammina, Timidonella, and Vania.

Previous the subfamily Spyrocylininae according to Loeblich and Tappan, 1964 in the Treatise on Invertebrate Paleontology which then included Spriocyclina, Anchispirocyclina, Orbitammiina,and Sornayina. Orbitammina has been moved to the textulariid Orbitopsellidae where it rests along with Orbitopsella, Cyclorbitopsella, and Labyrinthina.

Foraminifera, to which the Spirocyclinidae belong are characterized by reticulate pseudopoda,[1] and often produce intricate shells, or tests. They are referred to as Sarcodina in older texts, and more recently as Retaria

References

  1. Short Treatise on Foraminiferology, Jean-Pierre Bellier, Robert Mathieu, & Bruno Granier
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