A new species of the genus Ensiculifera (Dinophyceae): Its cyst and motile forms
1990
Matsuoka, K. (Nagasaki Univ. (Japan). Faculty of Liberal Arts) | Kobayashi, A. | Gains, G.
A new calcareous cyst form attributable to Ensiculifera,which is one of the small orthoperidinioid dinoflagellates, is found in surface sediments of central Japan. Other occurrences of the thecate cells are recorded from the Caribbean Sea. The cysts are spherical, 43-54 micro meter in diameter and comprise a calcreous outer layer forming a muri and/or large verrucate structure and a smooth inner layer. The paracingulum and parasulcus can be reflected by parallel rows of calcareous muri, but other paraplate features are indistinct. The archeopyle is a therophylic intercalary type, and the archeopyle suture probably runs between the apical and anterior intercalary plate series
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