Crucella sp.

(Fig. 5J)

FIGURED SPECIMEN. — ULVG-7339.

MATERIAL. — Three specimens (recovered with the hydrogen peroxide method); two specimens (recovered with the acetic acid method).

DESCRIPTION

Four-rayed hagiastrid, without bracchiopyle. Rays are equal in length, sharply pointed distally, with tri(?)-bladed spines at extremities. Rays are subcircular to elliptical in cross-section. Central area slightly elevated. Rays present pores composed of tetragonal pore-frames, linearly aligned.

REMARKS

All the recovered specimens present broken spines at extremities.

Family SPONGODISCIDAE Haeckel, 1862 Genus Tholodiscus Petrushevskaya & Koslova, 1972