Rodzaj Maxwellella Bandel, 1998
Gatunek typowy Opis The selenizone initiates in the second whorl of the teleoconch, and up to this point the shell is planispirally coiled in apical view; position of the slit is on the upper edge of the whorl and with initiation of the slit the whorl diameter increases more rapidly than in the non-slit juvenile shell; ornament of the teleoconch consists of very regular, strong axial ribs; differs from Scissurella by having a planispiral juvenile shell, usually a later begin of the slit and also a lateÍ more rapid begin of increase in shell diameter. Synonimy Zasięg czasowy Mid Jurassic; late Bathonian to mid Callovian Literatura Bandel, K. 1998. Scissurellidae als Modell für die Variationsbreite einer natürlichen Einheit der Schlitzbandschnecken (Mollusca, Archaeogastropoda). Mitteilungen aus dem Geologisch-Paläontologischen Institut der Universität Hamburg 81: 1‒120. |
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