radiolaria - rads_cenozoic

radiolaria - rads_cenozoic - Gondwanaria

Gondwanaria

Classification: rads_cenozoic -> Plagiacanthidae -> Lophophaenidae -> Gondwanaria
Sister taxa: Amphiplecta, Antarctissa, Arachnocalpis, Arachnocorallium, Arachnocorys, Archiperidium, Archipilium, Ceratocyrtis, Cryptogyrus, Dictyocephalus, Dictyocryphalus, Entepipedus, Gondwanaria, Lipmanella, Lithocampana, Lithomelissa, Lophophaena, Marimoum, Mitrocalpis, Periarachnium, Peromelissa, Phormacantha, P. inc sed castanoides, Plectacantha, Pseudocubus, Pseudodictyophimus, Pteroscenium, Steganocubus, Tripodocyrtis, Trisulcus

Daughter taxa (time control age-window is: 0-800Ma)		Granddaughter taxa
	Gondwanaria campanulaeformis neptune records:
	Gondwanaria deflandrei neptune records: 42
	Gondwanaria dogieli neptune records: 38
	Gondwanaria hister neptune records: 8
	Gondwanaria japonica neptune records: 47	G. japonica kiaeri
	Gondwanaria reshetnjakae neptune records:
	Gondwanaria sp. neptune records: 65

Taxonomy

Citation: Gondwanaria Petrushevskaya 1975

Rank: genus

Basionym: Gondwanaria

Type species: Sethoconus? dogieli Petrushevskaya 1967

Synonyms: Lipmanella Loeblich and Tappan 1961

Taxonomic discussion: Differs from Pteropilium by the cephalis being "with the neck type". It seems probable that Gondwanaria is connected with the Cretaceous and Paleogene species of Lithomelissa (?) amazon Foreman, 1968, group (Petrushevskaya and Kozlova, 1972, pl. 37). If so, this genus may be regarded as Plagiacanthoidea. The similarity of some Gondwanaria species and the earliest Clathrocorona (typical Setoperid) is also great (Plate 9, Figures 1-6). The difference is mainly in the thoracic gates present in the most of Clathrocorona species.

Catalog entries: Gondwanaria

Original description: Cephalis is globe-shaped, settled on the ""neck"" (Figure 10 I). Thorax cupola-shaped, The upper walls of the thorax may have three ribs formed by the spines D, Lr and Ll. There are no real ""sethoperid"" plates connecting these three spines with the apical horn. Abdomen may be more or less developed (and divided from the thorax). Pores irregular or in longitudinal rows.

Description

Morphology:

Cephalis is globe-shaped, settled on the "neck" (Figure 10 I). Thorax cupola-shaped, The upper walls of the thorax may have three ribs formed by the spines D, Lr and Ll. There are no real "sethoperid" plates connecting these three spines with the apical horn. Abdomen may be more or less developed (and divided from the thorax). Pores irregular or in longitudinal rows. Note on synonymy to Lipmanella - L. published before? G. so should have priority-dbl 22.820

Size:

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Total of range of species in this database
First occurrence (base): at base of Danian Stage (0% up, 66Ma, in Danian stage). Data source: Total of range of species in this database

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
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Lophophaenidae

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

Gondwanaria compiled by the radiolaria@mikrotax project team viewed: 29-5-2022

Taxon Search:

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204196 Go to Archive.is to create a permanent copy of this page - citation notes

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