Entobia goniodes Bromley et Asgaard, 1993

Type macroboring, substrate calcareous, tracemaker invertebrate.

Diagnosis: A highly camerate entobian, small in scale but extending over large areas. Apophyses are short, widening at the base. Chambers are not spherical but are irregularly nodular and tend to occur in closely adjacent rows. A few chambers fuse in pairs at a mature growth stage (phase C; Bromley and DAlessandro, 1989) to produce two types of chambers: fused and unfused. Further fusion was not seen. Apertures have several sizes, the largest produced by fusion, reaching several millimeters in width. Large canals connecting with these apertures may bear half-chambers on their sides. At a late growth stage (phase D), intercameral walls reduce to extreme thinness and the short apophyses and nodular chambers have an angular appearance (Figs. 9B, 10).