Translation 2816
Translation 2816
Translation 2816
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42<br />
B. Coverings (shells) represent a more or less strong armor, which<br />
consists of dissimilar polygonal plates (panels). The armor is<br />
membraneous during the juvenile phase, but the panels are already<br />
visible at that time.<br />
•<br />
1. Colis are more or less roundish, without large corniform<br />
formations on the anterior and posterior parts of the body.<br />
(a) Shape is spherical, without apical aperture, only 1 antapical<br />
plate present. Plate formula: 3'1a6"5"1".<br />
Family: Dinosphaeraceae (P.251)<br />
(b) Shape is spherical, ellipsoidal, ovoid or pyriform. Apical<br />
aperture present or absent. One or two antapical plates are (158)<br />
present.<br />
ie Shape is usually ovato-rotundate. Shell is thin,<br />
character of the panelling primitive: 2-4 1 4a8-7"7-6" 1 2".<br />
Family:Glenodiniopsidaceae (P.158)<br />
e Shape is more or less flattened in the direction<br />
. .<br />
of the longitudinal axis. Epivalve conical, apical<br />
aperture present, usually one antapical plate<br />
(rarely two). There is a crest beside the longitudinal<br />
groove which often projects over the antapical<br />
end. /01-2a7"5"1".<br />
Genus: Diplopsalis, Family: Peridiniaceae (P.179)<br />
3*Cel1s are spherical, ellipsoidal, ovoid or pyriform;<br />
armor is thick.