Fig. 4 in A new Early Triassic gastropod genus and the recovery of gastropods from the Permian/Triassic extinction

Fig. 4. Werfenella rectecostata redrawn from Neri and Posenato (1985: pl. 3: 7, 8). This relatively large and undeformed steinkern (composite mould from Val Sorda, western Dolomites, Italy) shows the purpurinid shape of Werfenella and its obliquely elongated, subrectangular aperture. The axial ornament is visible while the nodular ornament at the carinations is obscured.