|Daughter taxa (time control age-window is: 0-800Ma)|
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.
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.
Specimens which cannot be assigned to established species
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
|Tags||LITHS: nannolith-radiate, star-shaped, CA: process, |
CSPH: equant, monomorphic,
|Metrics||Lith size: 0.2->0.4µm; Segments: 3->3;|
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:
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=545 Go to Archive.is to create a permanent copy of this page - citation notes