radiolaria - rads_cenozoic - Larcospira bulbosa radiolaria - rads_cenozoic - Larcospira bulbosa

Larcospira bulbosa

Classification: rads_cenozoic -> Pyloniidae -> Larcospira -> Larcospira bulbosa
Sister taxa: L. bulbosa, L. moschkovskii, L. quadrangula, L. sp.


Citation: Larcospira bulbosa Goll & Bjørklund 1989
taxonomic rank: species
Basionym: Larcospira bulbosa
1989 Larcospira bulbosa - Goll and Björklund p. 729, pl. 2, fig. 16-19
Taxonomic discussion: Goll & Bjørklund, 1989, p 729-730, pl. 2 figs 16-21

Catalog entries: Larcospira bulbosa

Original description: Diagnosis: A species of Larcospira characterized by its thick-walled, uniformly perforate cortical lattice shell and irregularly swollen or invaginated margin.

Description: The skeleton consists of three lattice whorls that appear as simple lattice shells in plane view. The whorls are interjoined by a multitude of delicate radial beams that do not penetrate the cortical shell as spines. Cortical shell thick walled, densely and uniformly perforated by small, round pores. Medullary shells ovate in outline. Cortical shell margin varies from smoothly ovate to laterally constricted with alternating swellings and invaginations.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:


Goll, M. R. & Bjørklund, K. R. (1989). A new radiolarian biostratigraphy for the Neogene of the Norwegian Sea: ODP Leg 104. Proceedings of the Ocean Drilling Program, Scientific Results. 104: 697-737. gs O

Missing or ambiguous references: Goll & Björklund 1989;


Larcospira bulbosa compiled by the radiolaria@mikrotax project team viewed: 5-12-2023

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