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.

Four orders are included, the Astrorhizida, Dendrofryida, Hippocrepinida, and Saccamminida.

• V.I. Mikhalevich et al. [1] 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.