Palaeobiology of Silurian Leptaeninae (Brachiopoda) from Gotland, Sweden

Figure 1

Shell form in Gotland leptaenines. Scale bar = 1 cm (= 0.5 cm in detail pictures). (a)–(g): Conjoined valves in ventral view. (a) L. depressa visbyensis. NRM Br32290; Gnisvärd, Tofta parish; Upper Visby Formation. (b) L. rhomboidalis. NRM Br137849; Bals klint; Upper Visby Formation. (c) Lepidoleptaena poulseni. NRM Br121583; Lau Backar, Lau parish; Eke Formation. (d) L. sperion. NRM Br32368; unknown locality, possibly near Visby; Högklint Formation. (e) L. depressa lata. NRM Br32747; Västergarn, Sanda parish. (f) L. parvorugata. NRM Br32641, Follingbo parish. (g) L. depressa depressa. NRM Br112615; Djupvik, Eksta parish; Halla Formation, Djupvik Member. (h)–(j): Conjoined valves in median section. (h) L. rhomboidalis. PMU G1053; unknown locality; large internal volume. (i) L. depressa depressa. PMU G1052; Halla Formation, Fröjel; small internal volume. (j) L. depressa depressa. PMU G1051; Halla Formation, Fröjel; large internal volume. (k)–(o): Conjoined valves in lateral view. (k) L. depressa depressa. NRM Br32557; Visne Myr kanal, Fardhem parish; Hemse Group; note extremely long trail. (l) L. rhomboidalis. NRM Br116187; unknown locality; Upper Visby Formation; flat profile. (m) L. rhomboidalis. NRM Br116186; unknown locality; Upper Visby Formation; Ball-shaped profile. (n) Lepidoleptaena poulseni. NRM Br121581; Gansviken, Grötlingbo parish; Hamra Formation; Very long trail. (o) L. depressa depressa. NRM Br32441; Klintehamn, Klinte parish; Slite Group.