Fig. 3 in A new genus of terebratulid brachiopod from the Siegenian of the Rheinisches Schiefergebirge

Fig. 3. Middle Lower Devonian rhenorensselaeriid brachiopod Crassirensselaeria crassicosta (Koch, 1881) from the Rheinisches Schiefergebirge, Germany. A. Lectotype. Internal mould of articulated specimen (MB.B 2090.1). Siegen Beds of Häusling near Siegen, Siegerland area, topographical mapsheet 1:25 000 Siegen 5114. Internal mould, posterior view (A1); internal mould, lateral view (A2); latex cast, interior of posterior portions of both valves (A3). B. Internal mould of articulated specimen (MB.B 2090.2). Siegen Beds of Häusling near Siegen, Siegerland area, topographical mapsheet 1:25 000 Siegen 5114. In posterior (B1), anterior (B2), and lateral (B3) views. C. Internal mould of articulated specimen (AEG 65). Upper Siegen Beds of Aegidienberg tunnel, Siebengebirge, topographical mapsheet 1:25 000 Königswinter 5309. Internal mould, posterior view (C1); latex cast, interior of posterior portions of both valves (C2). D. Internal mould of dorsal valve (MB.B 2078.8). Upper Siegen Beds of quarry Altenhof, leg. Schmidt 1924, topographical mapsheet 1:25 000 Wenden 5013. Internal mould, oblique posterior view (D1); latex cast, oblique view of the interior (D2). E. Internal mould of articulated specimen (AEG 295−1b). Upper Siegen Beds of Aegidienberg tunnel, Siebengebirge, topographical mapsheet 1:25 000 Königswinter 5309. Oblique posterior view. F. Internal mould of articulated specimen (AEG 110 lateral B3b). Upper Siegen Beds of Aegidienberg tunnel, Siebengebirge, topographical mapsheet 1:25 000 Königswinter 5309. Lateral view. G. Internal mould of articulated specimen (AEG 97−3). Upper Siegen Beds of Aegidienberg tunnel, Siebengebirge, topographical mapsheet 1:25 000 Königswinter 5309. Posterior view. H. Internal mould of ventral valve (AEG 110 lateral B3a). Upper Siegen Beds of Aegidienberg tunnel, Siebengebirge, topographical mapsheet 1:25 000 Königswinter 5309. Ventral view. I. Internal mould of articulated specimen (AEG 295−1a). Upper Siegen Beds of Aegidienberg tunnel, Siebengebirge, topographical mapsheet 1:25 000 Königswinter 5309. Posterior view. J. Internal mould of articulated specimen (MB.B 2096). Siegen Beds of Siegen, leg. Spriesterbach 1918, Siegerland area, topographical mapsheet 1:25 000 Siegen 5114. In lateral (J1) and posterior (J2) views. K. Internal mould of articulated specimen (MBG 5083). Siegen Beds of Brück an der Ahr, leg. Sprengler 1895, Siegerland area, topographical mapsheet 1:25 000 Siegen 5114. Internal mould, posterior view (K1); latex cast, interior of posterior portions of both valves (K2); latex cast, cardinalia (K3). L. Internal mould of dorsal valve (MBG 5100). Siegen Beds of Burggraben near Netphen, Siegerland area, topographical mapsheet 1:25 000 Hilchenbach 5014. Oblique posterior view (L1); apical region (L2). M. External mould of ventral valve (AEG 146−5). Upper Siegen Beds of Aegidienberg tunnel, Siebengebirge, topographical mapsheet 1:25 000 Königswinter 5309. Ornament. Scale bars 10 mm, except K3, L2, and M for which are 1 mm.