Sonniniidae Ammonitina, Middle Jurassic from Southern Spain: taxonomic, biostratigraphical and palaeobiogeographical analysis Author Sandoval, José text Geodiversitas 2022 2022-09-15 44 27 801 851 journal article 158824 10.5252/geodiversitas2022v44a27 835cc227-e5c4-4453-a956-07a154f8fa5f 1638-9395 7150329 urn:lsid:zoobank.org:pub:E4896081-9312-4EA6-AE33-AAC44201748E Witchellia minima ( Hiltermann, 1939 ) [m] ( Fig. 14J ) Sonninia deltafalcata minima Hiltermann, 1939: 174 , pl. 12, figs 4, 6. Sonninia ( Poecilomorphus ) boweri minima – Huf 1968: 50 , pl. 4, figs 4(LT refigured)-6. Pelekodites minimus – Morton 1975: 66 , pl. 10, figs 23, 24, 31-34. Maceratites minimus – Fernández-López 1985: 104 , pl. 11, fig. 16. ? Pelekodites aff. minimus [m] – Dietze et al. 2007: 6 , fig. 4c. MATERIAL EXAMINED. — JAC22.26.2 and JAC22.43.26 . MEASUREMENTS. — See Table 23. DESCRIPTION Small evolute microconch with slightly compressed ovate whorl section, rounded umbilical edge and barely convex flanks, as well as a rounded venter with a faint keel. It is scarcely ornamented with smooth inner whorls; intermediate whorls have barely visible irregular sigmoid ribs, some bifurcating near the umbilical edge. The outer whorls are smooth or almost so. The peristome has spatulate lappets and a small ventral rostrum. The septal suture is not preserved in the Subbetic specimen. REMARKS W. macer is the most similar species to W. minima , but it is somewhat larger and has a more marked ribbing. In the Subbetic, both taxa appear at equivalent stratigraphic levels. W.minima may represent an extreme morphotype of W. macer . DISTRIBUTION In Scotland, W. minima occurs in the Laeviuscula and Propinquans? zones ( Morton 1975 ). Dietze et al. (2007) cited “ P .” aff. minimus in the Ovale Zone of Dundry Hill, Somerset (SW England ). In the Iberian range ( Spain ), the species is present in the Ovale and Laeviuscula zones (Fernández-López 1985) and in the Atlas (Morocco) it occurs in the Laeviuscula Zone ( Sadki 1996 ). The Subbetic specimens are from the Laeviuscula Zone of JAC22 section, Sierra de Alta Coloma area (Jaén Province).