Fig. 1. Xenotheka klinostoma Eisenack, 1937 in Autothecal morphs and dormancy in the camaroid graptolite Xenotheka

Fig. 1. Xenotheka klinostoma Eisenack, 1937; lower Llanvirn, Gilbergabrottet 1, Öland. Isolated autothecae, normal morph. A. Specimen ZPAL G.31/1 in lateral view (A1),, upper (A2)view, and proximal part of autotheca (A3). B. Specimen ZPAL G.31/2 in lateral view (B1), proximal part of autotheca (B2), lower wall (attachment surface or sole) (B3), and vesicular diaphragm (B4). Abbreviations: a, attachment surface; d, vesicular diaphragm of autothecal stolon; a, autothecal aperture; ca, camara; co, collum; g, grains of sediment attached to periderm; m, remnants of marginal (basal) membrane; o, basal opening in camara wall filled with vesicular diaphragm; s, mould of the terminal portion of the parental stolotheca (?).