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During late August 1985, a significant coccolithophorid contribution to phytoplankton biomass and diversity was evident in the inner Danish waters of the southern Kattegat and the Isefjord. The material included new taxa, one of which, Ericiolus spiculiger gen. et sp. nov., is now formally described together with a second, Antarctic species from the same genus, E. frigidus sp. nov. The genus comprises small, apparently heterotrophic species with a single type of calcified structure reminiscent of caltrops.
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Thomsen et al. (1995) studied this question.
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