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Pseudoceratium brevicornutum
From Fensome et al., 2019:
Pseudoceratium brevicornutum Herngreen et al., 2000, p.50, pl.9, figs.6–7. Holotype: Herngreen et al., 2000, pl.9, fig.6; Fensome et al., 2019a, fig.18P. Questionable assignment: Fensome et al. (2019a, p.51). Taxonomic junior synonym: Pseudoceratium eopelliferum (name not validly published), according to Herngreen et al. (2000, p.50). Age: late Ryazanian–early Hauterivian.
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Original description Herngreen 2000:
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Comments Fensome et al., 2019a:
This species differs from Pseudoceratium pelliferum in having distinctly shorter horns. In fact, the lateral horn on the holotype (Herngreen et al. 2000, pl. 9, fig. 6) is not clearly developed and so we questionably retain this species in Pseudoceratium. The other illustrated specimen (Herngreen et al. 2000, pl. 9, fig. 7) might be conspecific with Pseudoceratium pelliferum, albeit with a shorter than average horn.
Stratigraphical occurrence. Herngreen et al. (2000) recorded the range of this species from the North Sea and The Netherlands as upper Ryazanian (middle Berriasian) to lower Hauterivian.
Pseudoceratium brevicornutum Herngreen et al., 2000, p.50, pl.9, figs.6–7. Holotype: Herngreen et al., 2000, pl.9, fig.6; Fensome et al., 2019a, fig.18P. Questionable assignment: Fensome et al. (2019a, p.51). Taxonomic junior synonym: Pseudoceratium eopelliferum (name not validly published), according to Herngreen et al. (2000, p.50). Age: late Ryazanian–early Hauterivian.
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Original description Herngreen 2000:
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Comments Fensome et al., 2019a:
This species differs from Pseudoceratium pelliferum in having distinctly shorter horns. In fact, the lateral horn on the holotype (Herngreen et al. 2000, pl. 9, fig. 6) is not clearly developed and so we questionably retain this species in Pseudoceratium. The other illustrated specimen (Herngreen et al. 2000, pl. 9, fig. 7) might be conspecific with Pseudoceratium pelliferum, albeit with a shorter than average horn.
Stratigraphical occurrence. Herngreen et al. (2000) recorded the range of this species from the North Sea and The Netherlands as upper Ryazanian (middle Berriasian) to lower Hauterivian.