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Plate 2
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Belemnitellid coleoids from the extended type area of the Maastrichtian Stage (southeast Netherlands, northeast Belgium).
Figs. 1, 2. Belemnitella junior Nowak, 1913; NHMM BL 0414; lateral and ventral views, respectively; Maastricht Formation, basal Meerssen Member, former Blom quarry, Berg en Terblijt (southern Limburg, the Netherlands). L = 105 mm.
Fig. 3. Belemnitella junior Nowak, 1913; NHMM JJ 8451; lateral view of longitudinally split rostrum cavum to reveal internal features; Maastricht Formation, upper Nekum Member, ENCI-Heidelberg Cement Group quarry, Maastricht (southern Limburg, the Netherlands). L = 97 mm.
Fig. 4. Belemnella (Neobelemnella) gr. kazimiroviensis (Skołozdrówna, 1932); NHMM MK 3636; lateral view of longitudinally split rostrum cavum to reveal internal features; Maastricht Formation, top Meerssen Member; former Ankerpoort-Curfs quarry, Geulhem (southern Limburg, the Netherlands). L = 91 mm.
Figs. 5, 6. Belemnella (Neobelemnella) gr. kazimiroviensis (Skołozdrówna, 1932); NHMM JJ 2440; lateral (longitudinally split rostrum cavum to reveal internal features) and ventral views, respectively; Maastricht Formation, top Meerssen Member, Albert Canal, Vroenhoven-Riemst (Limburg, northeast Belgium). This particular specimen is close to ‘Belemnitella’ pensaensis Naidin, 1952 from the uppermost Maastrichtian of the Penza area in central Russia, a form also known from correlative levels in Poland (see Kongiel, 1962, p. 32, pl. 1, figs. 4-12; pl. 2, figs. 1-6; pl. 3, figs. 1-3), in particular with regard to the course of the bottom of the ventral fissure. L = 108 mm.
All natural size.