Lamprocyrtis


Classification: rads_cenozoic -> Pterocorythidae -> Lamprocyrtis
Sister taxa: Anthocyrtidium, Calocycletta, Lamprocyclas, Lamprocyrtis, Phormocyrtis, Podocyrtis, Pterocorys, Pterocorythidae inc sed, Tetracorethra, Theocorythium, Theocyrtis,
Daughter taxa: (blue => in age window 0-800Ma)

neptune records: 37

neptune records: 367

neptune records: 218

neptune records: 308

neptune records: 95

Taxonomy

Citation: Lamprocyrtis Kling 1973
Rank: genus
Basionym: Lamprocyrtis

Catalog entries: Lamprocyrtis

Original description: This genus is erected to accommodate the lineage from Lamprocyrtis heteroporos through L. haysi and possibly L. (?) hannai, a possible ancestor of the lineage. It is difficult to characterize because of rather marked differences between the initial and latest members of the lineage. Included are two- (later) and three- (earlier) segmented forms with a usually open, indistinctly three-lobed cephalis which tends to be cylindrical. The cephalis bears one stout, three-bladed apical horn and commonly one or more accessory spines. Pores of the postcephalic segment(s) usually increase in size distally, earlier species displaying a distinctive discontinuity in pore size. The shells terminate in a single, irregular row of axially to inwardly directed teeth which sometimes occupy a weakly developed peristome. Teeth occasionally occur outside the terminal row, but do not constitute a distinct second row as in Lamprocyclas Haeckel, 1882.

Description

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 Aquitanian Stage (0% up, 23Ma, in Aquitanian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Kling, S. A. (1973). Radiolaria from the eastern North Pacific, Deep Sea Drilling Project, Leg 18. Initial Reports of the Deep Sea Drilling Project. 18: 617-671. gs


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Lamprocyrtis compiled by the radiolaria@mikrotax project team viewed: 1-4-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=204361 Go to Archive.is to create a permanent copy of this page - citation notes



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