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By Jeletzky J.A., Kemper E.

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Extra resources for Comparative paleontology and stratigraphy of Valanginian Polyptychitinae and Simbirskitinae in Sverdrup Basin (Arctic Canada) and Lower Saxony Basin (NW Germany)

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6h) in the pronouncedly ascendant orientation, shape, proportions and orientation of' most of its lobes and saddles (except for the fourth Iateral saddle and second lateral lobc) and the rounded instead o f acutely pointed appearance of a11 lobules. However, the P.? &/bidurn suture appears to be pronouncedly ascendant and straight all the way to and including the second auxiliary Iobe, Furthermore, there appears lo be space in this suture line for the third auxiliary lobe between the second auxiliary and the indicated u~nbilical seam.

Its flanks are ornamented by two pairs of simple, roundtopped, bulge-like lobules. The fourth lateral saddle occupies at least the outer third of the umbilical wall and all of the umbilical shoulder on the earliest quarter of the ultimate whorl. However, neither its inner flank nor the second lateral lobe are visibIe on this strongly damaged part of the umbilical wall. e. adumbilicalmost) part of the flank and extends across the umbilical shoulder onto the outermost umbilical wall only (Figure 13a).

10, fig. 3) is another example of such forms. From Bodylevskites Paratollia differs first of all in an apparently complete absence of constrictions. The external suture lines of the two are similar in the presence of only two auxiliary lobes. However, they differ in the predominantly pronouncedly ascendant orientation of the Paratollia suture, the much greater slenderness of its lobes and the marked rounding of its lobules. e. closely above the umbilical shoulder) branching point of its primary ribs.

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