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White arrows in (a–b) point to apex, and black arrow in (a) points to a burrow underlying the tubular fossil. Arrows in (d) point to inflated annulae, with deflated ones in between. Note pustular structures at apical end in (f–g; part and counterpart). (a) NIGP159080; (b) NIGP159081; (c) NIGP159082; (d) NIGP159083; (e) NIGP159204; (f–g) NIGP159084. Scale bars 20 mm. Photographs taken by authors.
