Textularia sp 1. (Fig. 5:7, 8)

Remarks. This taxon was referred to Textularia due to its free agglutinated biserial test with well-sorted mediumsized grains, depressed sutures and slightly inflated chambers with rounded but slightly squared-off chambers. The chambers of this species deeply interlock, giving them a stacked appearance (Fig. 5:7). The aperture is a subcircular hole located at the base of the final chamber but sits off axis due to the chamber covering the inner-most half of the chamber preceding it (Fig. 5:8). These features closely resemble those tests assigned by Parker (2009: fig. 53) to Textularia kerimbaensis Said 1949 from Ningaloo Reef except that the aperture is not off axis and consists of a small slit as opposed to a sub-circular hole. Capricorn Group specimens also possess taller chambers.

Distribution within study area. Textularia sp. 1 was only collected from site 3 along Heron Transect 2. It is as abundant as T. candeiana and is less common than T. agglutinans, T. lateralis and Textularia jparkeri n. sp.