A = Living cells (DIC); B = Macrococcoliths (DIC, dry preparation); C = Macrococcoliths (arrows=spines, SEM, dry preparation).
Life-form: Solitary motile
Size: Coccolith case: 8-15 µm, micrococcoliths: 2.7-4.0 µm, macrococcoliths: 2.9-6.0 µm
Resting spore:
Note:
Distinctive features: Two types of caneoliths, ring of spines near the wall basis
Similar species: U. irregularis U. tenuis
Distribution: Atlantic- and Pacific Oceans, Mediterranean Sea
Literature:
Heimdal, B. R. 1993. Modern Coccolithophorids. In: (Tomas eds.)
Marine Phytoplankton: a guide to naked flagellates and
coccolithophorids. pp. 147-247.
Heimdal, B. and Gaarder, K. 1981. Coccolithophorids from the northern part of the eastern central Atlantic. II. Heterococcolithophorids. "Meteor" Forsch.-Ergebnisse., 33: 37-69.
Lecal, J. 1965. Coccolithophorids littoraux de Banyuls. Vie et Milieu., 16 (1 -B): 251-270.