Definition of "operculata" [operculata]

• Shells which are operculate.

The Century Dictionary (Public Domain)

• "But a host of first and last appearances of species and faunal turnovers are including the nannofossil “Biantholithus sparsus the calcareous dinoflagellate Thoracosphaera operculata, the sudden change in nannofossil assemblage, the last appearance of Ankhangelskiella cympiformis and Micula decussata and/or the first appearance of Cyclagelosphaera alta.”"
• "(Sertularia, abietina and operculata); these last are found especially attached to stones, shells and sea-weeds."
• "Capfula It | noik, 4-locuIans aut rariiis 2-6 - locularis, formi & mole & denfitate varia, femiinfera ex - tantibusad ambitum calicis veftigiis, olls inftar apice circum - fcifla & operculata, operculo infri produfto in receptaculum centrale angulofum & capfuls dtfl! eptmentis adjedum; femina in quolibet loculo foJitaria aut pauca, receptaculo inferta. angulata, arillo membranaceo teStz."