Lamprocyrtis

Daughter taxa (time control age-window is: 0-800Ma)
				Lamprocyrtis daniellae neptune records: 37
				Lamprocyrtis haysi neptune records:
				Lamprocyrtis heteroporos neptune records: 367
				Lamprocyrtis neoheteroporos neptune records: 218
				Lamprocyrtis nigriniae neptune records: 308
				Lamprocyrtis sp. neptune records: 95

Taxonomy

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 ranges of the species in this database
First occurrence (base): within Cenozoic Era (0.00-66.04Ma, base in Danian stage). Data source: Total of ranges 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: Pterocorythidae

Lamprocyrtis compiled by the radiolaria@mikrotax project team viewed: 6-10-2024 Taxon Search: Advanced Search Short stable page link: https://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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