Lispoceras sp. 1 Fig. 30, Table 18 Material examined ALGERIA • 1 specimen; Mouydir, south of Oued Temertasset (locality MOU-C1); Argiles de Teguentour (Helicocyclus-Ouaoufilalites Assemblage; early late Tournaisian); Korn et al. 2002 Coll.; illustrated in Fig. 30; MB.C.30487. Description Specimen MB.C.30487 is a body chamber fragment that belonged to a conch approximately 10 mm diameter (Fig. 30). It has an almost circular whorl profile with a slightly clearer umbilical margin. The last whorl only slightly encompassed the previous one, recognisable by the very small dorsal whorl zone. The shell surface, although marred by desert grinding, is clearly recognisable. The ornament consists of fine growth lines running in a slightly posterior direction across the umbilical wall and flanks, then forming a deep ventral sinus.

Published as part of Korn, Dieter & Bockwinkel, Jürgen, 2022, Early Carboniferous nautiloids from the Central Sahara, southern Algeria, pp. 67-108 in European Journal of Taxonomy 831 on page 104, DOI: 10.5852/ejt.2022.831.1871, http://zenodo.org/record/6885198