. Bulletin of the British Museum (Natural History). . Figs 7-12 Equneium burchardtii Dunker. 7, 8, top horizontal surface of block shown in Fig. 6, showing hollow stems in transverse section (compare Fig. 48, p. 52); Dunker Cat. 7; 7 x 2, 8 x 5. 9, in situ tubers attached to length of rhizome; , x 1. 10, Schenk's (1871: pi. 30, fig. 1) original specimen showing tubers attached to rhizome; Dunker Cat. 88, x 1. 11, w s/rw tubers from German Wealden; Dunker Cat. 87, X 2. 12, typical isolated tuber from Germany, very closely similar to numerous English specimens in () coll
. Bulletin of the British Museum (Natural History). . Figs 7-12 Equneium burchardtii Dunker. 7, 8, top horizontal surface of block shown in Fig. 6, showing hollow stems in transverse section (compare Fig. 48, p. 52); Dunker Cat. 7; 7 x 2, 8 x 5. 9, in situ tubers attached to length of rhizome; , x 1. 10, Schenk's (1871: pi. 30, fig. 1) original specimen showing tubers attached to rhizome; Dunker Cat. 88, x 1. 11, w s/rw tubers from German Wealden; Dunker Cat. 87, X 2. 12, typical isolated tuber from Germany, very closely similar to numerous English specimens in () collections; Dunker Cat. 85, X 2. Fig. 13 Equisetites yokoyamae Seward. Surface of block showing portions of rhizomes and numerous tubers, may not be in growth position; see text for discussion. The dotted lines mark the areas figured by Seward (1894): a, Seward's fig. 3; b, Seward's fig. 3*. [ Seward attributed the wrong specimen number to the former]. , x 1. shoot, fused laterally to form adpressed or somewhat inflated sheath up to 5 mm long. Acutely pointed leaf tips free for more than 1 mm; well-defined commissures between leaves reaching almost to node. [Internal anatomy unknown; micro- scopic details unknown]. Neotype. Specimen 57 in the old Dunker Catalogue, Museum fiir Naturkunde der Humboldt Universitat, East Berlin, here selected. Figs 1-3. Type locality and horizon. Harrel bei Biickeburg, north- west Germany. Berriasian. English material. The only English specimens so far reliably identified as E. burchardtii are those in the (). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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