Fig. 7
a–c Oblongarcula cf. alemannica Owen, Altmann Member (Tierwis Formation), Transverse serial sections. a Specimen 17.6 mm long, 12.4 mm wide and 9.0 mm thick, from Löchlibetter. b Specimen 18.1 mm long, 13.7 mm wide and 11.1 mm thick, from Löchlibetter; c Specimen 12.7 mm long, 10.2 mm wide and 8.3 mm thick, from Altmannsattel. The numbers of the sections indicate the distance in mm from the posterior end of the shell. Scale bars are 1 cm