Astrorhizana are a subclass of foraminifera characterized by simple tests composed of agglutinated material that can be irregular, spheroidal, or tubular and straight, branching or enrolled. Tests are non septate and consist of a single chamber following the proloculus. These are the Ammodiscacea of the Textulariina in the Treatise Part C, (Loeblich & Tappan 1964) that range from the Cambrian to Recent.
Temporal range: Cambrian - Recent
Four orders are included, the Astrorhizida, Dendrofryida, Hippocrepinida, and Saccamminida.
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- V.I. Mikhalevich et al.  Morphological classification of foraminerfera.
- A.R. Loeblich Jr and H.Tappan, 1964. Sarcodina Chiefly "Thecamoebians" and Foraminiferida; Treatise on Invertebrate Paleontology, Part C Protista 2. Geological Society of America and University of Kansas Press.