radiolaria - rads_cenozoic - Arachnocalpis


Classification: rads_cenozoic -> Plagiacanthidae -> Lophophaenidae -> Arachnocalpis
Sister taxa: Amphiplecta, Antarctissa, Arachnocalpis, Arachnocorallium, Arachnocorys, Archiperidium, Archipilium, Botryopera, Ceratocyrtis, Cryptogyrus, Dictyocephalus, Dictyocryphalus, Entepipedus, Gondwanaria, Lipmanella, Lithocampana, Lithomelissa, Lophophaena> >>
Daughter taxa (time control age-window is: 0-800Ma)
Arachnocalpis ellipsoides

neptune records:
Arachnocalpis ovatiretalis

neptune records:
Arachnocalpis sp.

neptune records:


Citation: Arachnocalpis Haeckel 1881
Rank: genus
Basionym: Arachnocalpis
Taxonomic discussion: Has been assigned to Archiphormididae, here assigned to Lophophaenidae following new classification being developed by Suzuki & co-workers

Catalog entries: Arachnocalpis

Original description: 1a. Tribus: Archicorida. Monocyrtida aperta eradiata.
B. Archicorida corotiata (= Carpocanida), (Archicorida margine ostii dentium corona ornato).
BII. acuta (capitulo spinoso, non laevi)
IIb testa spinosa, multis spinis obtecta.
a+++ spallio arachnoideo.

Translated description: 1a. Tribe: Archicorida. Open monocyrtids without radial appendages.
B. Coronate Archicorida (= Carpocanida). (Archicorida with the apertura'l margin bearing a corona of teeth).
BII. Acute (cephalis spiny, not smooth).
IIb. Test spiny, covered with many spines.
a+++ Outer shell arachnoidal. (Translated from Latin by E.M.R. and W.R.R.)]




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 Gelasian Stage (0% up, 2.6Ma, in Piacenzian stage). Data source: Total of range of species in this database

Plot of occurrence data:


Haeckel, E. (1882). Entwurf eines Radiolarien-Systems auf Grund von Studien der Challenger-Radiolarien [Basis for a radiolarian classification from the study of Radiolaria of the Challenger collection]. Jenaische Zeitschrift für Naturwissenschaft. 15: 418-472. gs


Arachnocalpis compiled by the radiolaria@mikrotax project team viewed: 30-9-2022

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