` Morphogeny from Gwynia to Dallina. 
Periods, 
Stages. Stages. Stages. Stages. Stages. Stages. Stages. 
‘Larval yniform ? w niform wyniform niform gwyniform 
FS e "t E ostelliform cistelliform cistelliform cistelliform 
Adolescent gwyniform cistelliform cistelliform platidiform platidiform esie ados platidiform 
ismeniform ismeniform 
dhfeldtiform mühlfeldtiform 
terebrataliform 
Mature Gwynia Cistella Platidia Ismenta Miuhlfeldtia Terebratalia Dallina 
Morphogeny from Gwynia to Magellania. 
Periods, Stages. Stages. Stages. Stages. Stages. Stages, Stages. Stages. 
Larval gwyniform? | gwyniform | gwyniform | gwyniform yniform gwyniform 
cistelliform cistelliform cistelliform cistelliform cistelliform 
Adolescent | gwyniform | cistelliform | cistelliform | bouchardiform | bouchardiform | bouchardiform | bouchardiform | bouchardiform 
megerliniform | megerliniform em megerliniform 
magadiform maga m i 
Siate TER magaselliform 
; terebratelliform 
Mature Gwynia Cistella . Bouchardia | Megerlina Magas Magasella Terebratella Magellania 
"ipanjoNT UDNALIUF Su 609 
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