195
Fig. 2.39 Schematic longitudinal sections of endotoichal ovicells in:
( A ) Cellaria tenuirostris ; ( B ) Cellaria diversa . Abbreviations: bc brood
cavity, bсw brood-cavity wall, cr cryptocyst, dz distal zooid, ес ectooecium, en entooecium, fm membranous frontal wall, hc hypostegal
coelom, m muscle strands of ooecial vesicle, mz maternal zooid, oc
ooecial coelom, ое ooecium, of ovicell fl oor, op operculum, pl placental
analogue (embryophore), sc sclerite of ooecial vesicle, tw transverse
wall, v ooecial vesicle
Figures
Fig. 2.39 Schematic longitudinal sections of endotoichal ovicells in:
( A ) Cellaria tenuirostris ; ( B ) Cellaria diversa . Abbreviations: bc brood
cavity, bсw brood-cavity wall, cr cryptocyst, dz distal zooid, ес ectooecium, en entooecium, fm membranous frontal wall, hc hypostegal
coelom, m muscle strands of ooecial vesicle, mz maternal zooid, oc
ooecial coelom, ое ooecium, of ovicell fl oor, op operculum, pl placental
analogue (embryophore), sc sclerite of ooecial vesicle, tw transverse
wall, v ooecial vesicle
Figures