| Here is a large and quite rare diploporite Cystoidea of the genus Phlyctocystis from Portugal. This specimen is likely belongs to the species Phlyctocystis gigas (Termier & Termier, 1950). | |||
| Location: | Macao, Portugal | ||
| Size blastoid : | about 110 x 58 mm | ||
| Age: | Middle Ordovician , Caradoc  (Sandbian)  , Ribeira do Casalinho Formation (about. 464. Ma) | ||