prop. n.1.(Zool.) A genus of minute living Foraminifera having a globular shell.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Morphological recognition of cryptic species in the planktonic foraminifera Orbulina universa.
in the studied sections based on the occurrence of Triloculina tricarinata, Asterigerina rotula, Amphistegina lessoni, Neorotalia viennotti, Ammonia beccari, Ammonia stachi, Elphidium sp.14, Elphidium sp.1, Miogypsina sp., Operculina complanata, Orbulina universa, Globigerinoides sp., Globigerina sp., Globorotalia sp.
In the identified assemblage, warm-water species are dominant (Orbulina universa, Globigerinoides ruber and Neogloboquadrina dutertrei) or subdominant (Globigerinoides trilobus and Globigerinella siphonifera).
Orbulina universa, Globigerinella siphonifera, Globigerina bulloides, Globigerinita glutinata, and Pulleniatina obliquiloculata do not show a strong preference for particular depths within 300 m of water column (Be & Tolderlund 1971).
Experimental determination of barium uptake in shells of the planktonic Foraminifera Orbulina universa at 22[degrees]C.
We have successfully analysed 5 - 10 mg samples of planktonic foraminiferal tests (Pulleniatina obliquiloculata, Globorotalia tumida and Orbulina universa) from top 2 cm of cores collected from Ontong-Java Plateau (western Pacific) and Ceara Rise (western equatorial Atlantic).