Lophophaenidae


Classification: rads_cenozoic -> Plagiacanthidae -> Lophophaenidae
Sister taxa: Lophophaenidae, Plagiacanthidae (ss), Plagiacanthidae inc sed, Sethoperidae, Sethophormididae, Theopiliidae
Daughter taxa: (blue => in age window 0-800Ma) Granddaughter taxa
Amphiplecta

neptune records: 32

Antarctissa

neptune records: 1685

Arachnocalpis

neptune records:

Arachnocorallium

neptune records: 92

Arachnocorys

neptune records:

Archiperidium

neptune records: 45

Archipilium

neptune records: 14

Ceratocyrtis

neptune records: 630

Cryptogyrus

neptune records:

Dictyocephalus

neptune records: 16

Dictyocryphalus

neptune records:

Entepipedus

neptune records:

Gondwanaria

neptune records: 236

Lipmanella

neptune records: 71

Lithocampana

neptune records: 3

Lithomelissa

neptune records: 363

Lophophaena

neptune records: 457

Marimoum

neptune records:

Mitrocalpis

neptune records: 30

Periarachnium

neptune records:

Peromelissa

neptune records:

Phormacantha

neptune records: 17

Plagiacanthidae inc sed castanoides

neptune records:

Plectacantha

neptune records: 6

Pseudocubus

neptune records: 167

Pseudodictyophimus

neptune records: 369

Pteroscenium

neptune records:

Steganocubus

neptune records:

Tripodocyrtis

neptune records:

Trisulcus

neptune records:

Taxonomy

Citation: Haeckel, 1881
emend. Petrushevskaya, 1971
Rank: family (new classif)
Type species: Lophophaena Ehrenberg 1847
Taxonomic discussion: This family is part of the revised classification system being developed by Prof. Suzuki and colleagues

Catalog entries: Lophophaenidae [no catalog entry yet]

Description

Distinguishing features: Two segemented plagiacanthids with well developed cephalis and thorax, and generally some external expression of primary spicules - either as lateral external spines or prolonged in thorax as ribs/feet. Cephalis generally relatively large, thorax termination irregular and lacking any special structures.


Morphology:
Haeckel 1881 (as Lophophaenida): Sethocorida [Dyocyrtida aperta eradiata] margine ostii laevi aut succiso. Petrushevskaya 1971: Plagiocanthidae with the skeleton consisting of two equal segments: cephalis and thorax. Cephalis with a large eucephalic lobe and a small antecephalic lobe. The latter is not separated from the thorax because of the weakness of the arches cp. The spine A passes through the center of the cephalis like a columella, up to branches a. Then it becomes included in the front wall of the eucephalic lobe, which at the same time is the external wall of the upper part of the cephalis. Arches ap are included through their whole length in the walls of the cephalis. The spines A, D and L form free horns or spines.

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:

References:


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Lophophaenidae compiled by the radiolaria@mikrotax project team viewed: 2-12-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=206134 Go to Archive.is to create a permanent copy of this page - citation notes



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