Tholodiscus sp.

(Fig. 5K)

FIGURED SPECIMEN. — ULVG-7340.

MATERIAL. — Five specimens (recovered with the hydrogen peroxide method); four specimens (recovered with the acetic acid method).

DESCRIPTION

Discoidal test with rounded quadrangular outline and spongy meshwork. Four radial spines extend from the quadrant boundaries. Central area of each quadrant with secondary spines.

REMARKS

This species differs from the species assigned to the genus Orbiculiforma Pessagno, 1973 by the four radial spines at the quadrant boundaries.