radiolaria - rads_cenozoic - Larcospira bulbosa

views1 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.

rad_org Larcospira bulbosa img2725.jpg
rad_org Larcospira bulbosa img2726.jpg
rad_org Larcospira bulbosa img2727.jpg
rad_org Larcospira bulbosa img2728.jpg

Taxonomy

Citation: Larcospira bulbosa Goll & Bjørklund 1989

Taxonomic rank: species

Basionym: Larcospira bulbosa

Synonyms:
1989 Larcospira bulbosa - Goll and Björklund p. 729, pl. 2, fig. 16-19

From Suzuki Paleotax db:

1989 Larcospira bulbosa n. sp. Goll & Bjørklund p. 729, pl. 2, figs. 16-21
2005 Larcospira bulbosa Goll & Bjørklund Funakawa & Nishi pl. 2, figs. 5a, 5b

Taxonomic discussion: Goll & Bjørklund, 1989, p 729-730, pl. 2 figs 16-21

Catalog entries: Larcospira bulbosa

Type images:

type image: L. 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.

Description

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:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Larcospira bulbosa, synonyms included - Larcospira bulbosa;
See also space-time plot :: Samples map :: Parent: Larcospira

References:

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: 26-1-2025

Taxon Search:

Advanced Search

Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204417 Go to Archive.is to create a permanent copy of this page - citation notes

Add Comment

Comments

No comments yet. Be the first!