Classification: ntax_cenozoic -> Nannolith families inc sed -> Nannolith genera inc sed -> Ericiolus
Sister taxa: Ericiolus, Florisphaera, Pileolosphaera, Mercedesia, Goniolithus, Minylitha, Unidentified nannoliths

Daughter taxa (time control age-window is: 0-800Ma)
Ericiolus frigidus
All four spikes of tetrad of similar length (0.2-0.3 µm) and angles between all four are equal.
Ericiolus sp. Y
Possibly related form, consisting of three bifurcate rays each with upturned end, and a central spine with terminal knob. Occasionally delicate laths extend up the central spine.
Ericiolus spiculiger
Tetrads consists of three almost coplanar spikes, 0.1-0.2 µm long, forming proximal surface and one longer (0.3-0.4 µm) distally directed spike. Underlain by oval organic baseplate with concentric striations.
Ericiolus sp.
Specimens which cannot be assigned to established species


Citation: Ericiolus Thomsen in Thomsen et al., 1995
Rank: Genus
Type species: Ericiolus spiculiger Thomsen in Thomsen et al., 1995
Taxonomic discussion: Etymology “little hedgehog”.

Distinguishing features: Nannoliths are tetrads of spines - “caltrops”. Cells monomorphic, saddle-shaped, with long flagella and haptonema. 

Farinacci & Howe catalog pages: Ericiolus *

Morphology: Liths show some similarity to the more skeletal Polycrater species.

Size: Cells 3-4 µm across

Search data:
TagsLITHS: nannolith-radiate, star-shaped, CA: process,
CSPH: equant, monomorphic,
MetricsLith size: 0.2->0.4µm; Segments: 3->3;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): at top of No known fossil record modern (100% up, 0Ma, in "Holocene" stage). Data source: Total of range of species in this database

Plot of occurrence data:


Thomsen, H. A., De Place Bjorn, B., Højlund, L., Olesen, J. & Pedersen, J. B. (1995). Ericiolus, gen. nov. (Prymnesiophyceae), a new coccolithophorid genus from polar and temperate waters. European Journal of Phycology. 30(29-34): -. gs V O


Ericiolus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-3-2021

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Short stable page link: Go to to create a permanent copy of this page - citation notes

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