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| Format: | Recurso digital |
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Zenodo
2020
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| Online Access: | https://doi.org/10.5281/zenodo.8364749 |
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Table of Contents:
- <p>Species <i>Syracosphaera lafourcadii</i> (Lecal 1967) Archontikis, Young, Cros comb. nov. HOL</p><p>Basionym: <i>Helladosphaera</i> (<i>Cyclohelladosphaera</i>) <i>lafourcadii</i> Lecal 1967 Hydrobiologia vol. 29, pp. 326– 328, text-figs. 21, 22, figs. 28–30.</p><p>Synonymy: <i>Anthosphaera lafourcadii</i> (Lecal) Kleijne (1991), p. 41, Pl.7 IX, Figs. 1–2; Winter and Siesser (1994), p. 148, Fig. 165; Aubry (1999), p. 247, Fig. 5; Cros (2001), p. 80, Pl. 55, Figs. 5–6; Cros and Fortuño (2002), p. 148, Fig. 86D; Young et al. (2003), p. 90, Pl. 42, Fig. 2; Dimiza (2006), p. 82, Pl. XXVI, Fig. 4; Malinverno et al. (2008), p. 137, Fig. 109.</p><p>Description: Coccosphere, spherical in shape, with c. 60–70 BCs and c. 10 CFCs. BCs consist of an elliptical, narrow rim that is tightly connected to a vaulted central structure, made delicately of less regular crystallites. Several struts of one or two crystals width connect the dome-like distal cover with the rim, leaving pores in the perforate cycle, consistently present. No apical boss can be observed on top of the BCs’ central distal cover. CFCs possess a broad but low (height similar to width) leaf-like process, with a large arched opening.</p><p>Remarks: BCs are similar to those of <i>S. molischii</i> var. <i>molischii</i> HOL, but smaller and with noticeably less regular crystallites. The CFCs are distinctively different, having a well-formed arch and lacking the large leaf-like extension.</p><p>Dimensions: Coccosphere diameter c. 4–5 μm. BCs c. 0.8 μm long x 0.6 μm wide. CFCs’ distal process c. 0.8 μm high.</p>