Specimens of Orbitopsella praecursor, from Museo Paleontologico e Preistorico “Piero Leonardi”.

Belongs within: Ammodiscana.

The Dicyclinidae are a group of discoidal or low conical forams known from the Jurassic (or possibly Upper Triassic) to the Middle Eocene (Loeblich & Tappan 1964).

Characters (from Loeblich & Tappan 1964): Test free, discoidal or depressed conical, chambers cyclical; wall of finely agglutinated calcareous particles, with imperforate epidermis; aperture multiple, peripheral.

Dicyclinidae [Dicyclininae]LT64
|--Nakkadyia Ismail, Hussein-Kamel et al. 2009M13
|--Dicyclina Munier-Chalmas 1887LT64
| `--*D. schlumbergeri Munier-Chalmas 1887LT64
|--Broeckinella Henson 1948LT64
| `--*B. arabica Henson 1948LT64
|--Coskinolinella Delmas & Deloffre 1961LT64
| `--*C. daguini Delmas & Deloffre 1961LT64
|--Dohaia Henson 1948LT64
| `--*D. planata Henson 1948LT64
|--Mangashtia Henson 1948LT64
| `--*M. viennoti Henson 1948LT64
|--Qataria Henson 1948LT64
| `--*Q. dukhani Henson 1948LT64
`--Zekritia Henson 1948LT64
`--*Z. langhami Henson 1948LT64

*Type species of generic name indicated


[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.

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