Gondwanaria hister


Classification: rads_cenozoic -> Plagiacanthidae -> Lophophaenidae -> Gondwanaria -> Gondwanaria hister
Sister taxa: G. campanulaeformis, G. deflandrei, G. dogieli, G. hister, G. japonica, G. reshetnjakae, G. sp.

Taxonomy

Citation: Gondwanaria hister Petrushevskaya 1975
Rank: species
Basionym: Gondwanaria hister
Taxonomic discussion: Petrushevskaya 1975 p.585 pl.9 fig.19; pl.21 fig.3

Catalog entries: Gondwanaria hister

Original description: Cephalis with a neck. The thorax is subglobal or nearly ellipsoidal, about 60┬Ám; abdomen reduced. The number of the pores is the same as in G. japonica (about 7-9 on a half of the equator). Pores rather small, arranged far apart. The shell mouth is constricted.
Remarks on original description: In tropical Atlantic deposits the species is restricted to Calocycletta costara Zone; also in the middle Miocene in the Antarctic.
[One picture and one drawing are given for the holotype's illustration: one from sample DSDP 14-139-5, CC; the other one from DSDP 19-278-21-3, CC]

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:

References:

Petrushevskaya, M. G. (1975a). Cenozoic radiolarians of the Antarctic, Leg 29, DSDP. Initial Reports of the Deep Sea Drilling Project. 29: 541-675. gs


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Gondwanaria hister compiled by the radiolaria@mikrotax project team viewed: 14-5-2021

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204200 Go to Archive.is to create a permanent copy of this page - citation notes



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