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PARTIFORM:
The term for a gonyaulacalean hyposomal
tabulation pattern in which the
posterior sulcal plate (Z) is usually distinctly
omegaform, consistently within the
sulcus, and extends further to the
anterior than does the
posterior intercalary plate (X). The large size of the posterior sulcal plate and its anteriorward extension is reciprocated by the small size of the
right sulcal plate (Ii) and the
left sulcal plate (Im). See also
quinqueform and
sexiform. Refer to Text-Figure 64A.
DINOFLAJ (c) 1998