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Lingulodinium machaerophorum var. clavatum
Variety: Lingulodinium machaerophorum var. clavatum Mudie et al., 2001
Holotype: Mudie et al., 2001, pl. 2, fig. 13, sample 98052926, core MAR97–2, 0 cm
Locality: Marmara Sea, ~1200 m water depth
Stratigraphic Stratum: Holocene
Etymology: clavatum = club-shaped (Latin), as applied to distal process ends.
Other studied Material: Mudie et al. (2017, plate-fig. 18.4 NW Black Sea; fig. 18.8), Marmara Sea, core DM13.
Description: Morphotype of L. machaerophorum distinguished by the presence of many relatively short processes (<10 um length) having bulbous, club-shaped, clavate or globose tips (text Plate I, 4), usually without spinules or granules. These morphotypes probably representing incompletely developed cysts (Kokinos and Anderson, 1995). This morphotype was rare in our ˙Imralı Basin samples and was therefore grouped with the shortprocess taxon L. machaerophorum < 10 for counting in our ˙Imralı Basin temporal record.
Comparison: L. machaerophorum var. B of Leroy et al. (2006) has a very large body (mean diameter 60 μm and extremely short (2 3 μm) processes having bulbous tips; this form was not seen in our temporal record although it is present in MIS 5 samples of core CS-18 (Leroy et al., 2023b, their pl. 18.
Holotype: Mudie et al., 2001, pl. 2, fig. 13, sample 98052926, core MAR97–2, 0 cm
Locality: Marmara Sea, ~1200 m water depth
Stratigraphic Stratum: Holocene
Etymology: clavatum = club-shaped (Latin), as applied to distal process ends.
Other studied Material: Mudie et al. (2017, plate-fig. 18.4 NW Black Sea; fig. 18.8), Marmara Sea, core DM13.
Description: Morphotype of L. machaerophorum distinguished by the presence of many relatively short processes (<10 um length) having bulbous, club-shaped, clavate or globose tips (text Plate I, 4), usually without spinules or granules. These morphotypes probably representing incompletely developed cysts (Kokinos and Anderson, 1995). This morphotype was rare in our ˙Imralı Basin samples and was therefore grouped with the shortprocess taxon L. machaerophorum < 10 for counting in our ˙Imralı Basin temporal record.
Comparison: L. machaerophorum var. B of Leroy et al. (2006) has a very large body (mean diameter 60 μm and extremely short (2 3 μm) processes having bulbous tips; this form was not seen in our temporal record although it is present in MIS 5 samples of core CS-18 (Leroy et al., 2023b, their pl. 18.