radiolaria - rads_cenozoic - Buccinosphaera invaginata

Buccinosphaera invaginata


Classification: rads_cenozoic -> Collosphaeridae -> Buccinosphaera -> Buccinosphaera invaginata
Sister taxa: B. invaginata, B. sp.

Taxonomy

Citation: Buccinosphaera invaginata Haeckel 1887
Rank: species
Basionym: Buccinosphaera invaginata

Taxonomic discussion:
Haeckel 1887 p.99 pl.5 fig.11; Nigrini 1971; Knoll & Johnson 1975 p.63 pl.1 figs.3-7

Catalog entries: Buccinosphaera invaginata

Original description: Shell irregular roundish or nearly polyhedral, with a variable number of umbilical depressions, which are prolonged on the inside into cylindrical or somewhat conical, centripetal, fenestrated tubes, about one-third as long as the shell radius. Inner mouth of the tubes narrower, scarcely half as broad as the outer mouth, about equal to one-fourth the shell radius, truncated. Pores of the tubes and of the shell small, roundish, irregular in size and distribution, about as broad as the bars. Twenty-five to thirty pores in the half meridian of the shell. In all observed specimens the spherical central capsule (half as broad as the shell) contained a large number of crystals.

Diameter of the shell 100 to 120µm, of the pores 1 to 3µm, of the bars 2 to 3µm; length of the tubuli 20µm; outer mouth 26µm, inner mouth 13µm; crystals in the central capsule 2 to 4µm, sometimes 88µm.
Remarks on original description: see B. invaginata Haeckel in Hilmers, 1906, partim.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

Plot of occurrence data:

References:

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs

Knoll, A. H. & Johnson, D. A. (1975). Late Pleistocene evolution of the collosphaerid radiolarian Buccinosphaera invaginata Haeckel. Micropaleontology. 21(1): 60-68. gs

Nigrini, C. A. (1971). Radiolarian zones for the Quarternary of the equatorial Pacific Ocean. In, Funnel, B. M. & Riedel, W. R. (eds) The Micropalentology of Oceans. Cambridge University Press, London 443-461. gs


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Buccinosphaera invaginata compiled by the radiolaria@mikrotax project team viewed: 21-9-2021

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