pforams@mikrotax - Benthic origins

Benthic origins

Classification: pf_cenozoic -> Benthic origins
Sister taxa: Globigerinidae, Globorotaliidae, Hantkeninidae, Truncorotaloididae, Globanomalinidae, Hastigerinidae, Globigerinitidae, Candeinidae, Guembelitrioidea, Benthic origins, hidden,

Daughter taxa: (blue => in age window 0-800Ma)		Granddaughter taxa
	Gallitellia Initially biserial may become multiserial, smooth, microperforate wall; aperture simple (no lip or toothplate).	G. vivans G. sp.
	Streptochilus Like Chiloguembelina but with an internal plate connecting successive chambers, a prominent extension of an apertural collar, and a smoother surface texture.	S. globulosum S. globigerum S. latum S. subglobigerum S. inglei S. macdougallae S. cetacense S. mascarenense S. pristinum S. rockallkiddense S. tasmanense S. martini S. sp.

Taxonomy

Citation: Benthic origins

Rank: family

Taxonomic discussion: Molecular genetic data on the extant species Gallitelia vivans and Streptochilus globigerus has shown that they fall outsde the clade of the other extant planktic foraminifera and so have separate origins from the benthic foraminifera (Darling et al. 2007, Ujiie et al. 2008). The same may apply to some fossil taxa currently placed in the Guembelitriodea.
These two taxa are not directly related but it is convenient to group them here.

Catalog entries: Bolivinidae [no catalog entry yet]

Distinguishing features: Biserial (separate evolutionary origin)

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

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): in upper part of Lutetian Stage (69% up, 43.2Ma, in Lutetian 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. For the customisable plot option go to a genus page Parent: pf_cenozoic

References:

Benthic origins compiled by the pforams@mikrotax project team viewed: 15-8-2020

Taxon Search:

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Short stable page link: http://mikrotax.org/pforams/index.php?id=104009 Go to Archive.is to create a permanent copy of this page - citation notes

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