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Fig. 2.43 Structure of ooecia of hyperstomial ovicells in: ( A – D )
Microporella ciliata ; ( E , F ) Fenestrulina malusii . ( A , B , E ) Parts of
cleaned colonies with fully formed ooecia. ( C , D ) Longitudinal fractures
of ooecia (oral spine can be seen in brood cavity in ( D )). ( F ) Lateral
view of fractured ooecium ( arrowheads indicate peripheral elevation
surrounding entooecial base). In ( E ) ovicell (at left ) closed by zooidal
operculum. Abbreviations: av avicularium, bc brood cavity, dz distal
zooid, en entooecium, fr frontal shield, mz maternal zooid, of ovicell
fl oor, ор operculum, os oral spine, tw transverse wall. Scale bars:
A , 300 μm; B , E , F , 100 μm; C , D , 30 μm
Figures
Fig. 2.43 Structure of ooecia of hyperstomial ovicells in: ( A – D )
Microporella ciliata ; ( E , F ) Fenestrulina malusii . ( A , B , E ) Parts of
cleaned colonies with fully formed ooecia. ( C , D ) Longitudinal fractures
of ooecia (oral spine can be seen in brood cavity in ( D )). ( F ) Lateral
view of fractured ooecium ( arrowheads indicate peripheral elevation
surrounding entooecial base). In ( E ) ovicell (at left ) closed by zooidal
operculum. Abbreviations: av avicularium, bc brood cavity, dz distal
zooid, en entooecium, fr frontal shield, mz maternal zooid, of ovicell
fl oor, ор operculum, os oral spine, tw transverse wall. Scale bars:
A , 300 μm; B , E , F , 100 μm; C , D , 30 μm
Figures