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Florentinia flosculus
From Fensome et al., 2019:
Florentinia flosculus (Deflandre, 1937b, p.75, pl.15 [also labelled pl.12], figs.5–6) Lentin and Williams, 1981, p.104. Holotype: Deflandre, 1937b, pl.15 (also labelled pl.12), fig.5. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (combination not validly published; Appendix A), thirdly Litosphaeridium?, fourthly Silicisphaera?, fifthly (and now) Florentinia?. Questionable assignment: Lentin and Williams (1981, p.104). Taxonomic junior synonym: Eurysphaeridium fibratum (name not validly published), according to Slimani (2001a, p.192). See also Areoligera tenuicapillata subsp. pinopollina. NIA. Age: Senonian.
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Original description (Deflandre, 1937b) (translated from French):
HYSTRICHOSPHÆRIDIUM FLOSCULUS n. sp.
PI. XV, fig. 5, 6.
Holotype: AF 46, flint S. 35, pebble, Paris.
Paratypes: AJ 2, AJ 7, flint S. 53, pebble, Paris.
This attractive species has a globose, roughly spherical shell bristling with more or less curved spines, between which emerge a few appendages (about 7-8) with a very distinctive structure. They are stocky and shaped like a prism with a triangular base. Their distal end can widen into a fan, and its surface (because these appendages are closed) bears, both on the edges and towards its center, short, very sharp spines. In some specimens, on the contrary, there is no fanning, but the edge is somewhat rounded. Nevertheless, the general appearance remains the same. The shell's integurum, entirely punctuated, is more or less dark yellowish.
The observed dimensions are: shell diameter, 38-45 μm; total diameter, including appendages, 55-62 μm.
Hystrichosphæridium fosculus has only been seen in two flints, both pebbles collected in Paris.
Florentinia flosculus (Deflandre, 1937b, p.75, pl.15 [also labelled pl.12], figs.5–6) Lentin and Williams, 1981, p.104. Holotype: Deflandre, 1937b, pl.15 (also labelled pl.12), fig.5. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (combination not validly published; Appendix A), thirdly Litosphaeridium?, fourthly Silicisphaera?, fifthly (and now) Florentinia?. Questionable assignment: Lentin and Williams (1981, p.104). Taxonomic junior synonym: Eurysphaeridium fibratum (name not validly published), according to Slimani (2001a, p.192). See also Areoligera tenuicapillata subsp. pinopollina. NIA. Age: Senonian.
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Original description (Deflandre, 1937b) (translated from French):
HYSTRICHOSPHÆRIDIUM FLOSCULUS n. sp.
PI. XV, fig. 5, 6.
Holotype: AF 46, flint S. 35, pebble, Paris.
Paratypes: AJ 2, AJ 7, flint S. 53, pebble, Paris.
This attractive species has a globose, roughly spherical shell bristling with more or less curved spines, between which emerge a few appendages (about 7-8) with a very distinctive structure. They are stocky and shaped like a prism with a triangular base. Their distal end can widen into a fan, and its surface (because these appendages are closed) bears, both on the edges and towards its center, short, very sharp spines. In some specimens, on the contrary, there is no fanning, but the edge is somewhat rounded. Nevertheless, the general appearance remains the same. The shell's integurum, entirely punctuated, is more or less dark yellowish.
The observed dimensions are: shell diameter, 38-45 μm; total diameter, including appendages, 55-62 μm.
Hystrichosphæridium fosculus has only been seen in two flints, both pebbles collected in Paris.