Nannotax3 - ntax_cenozoic - Sphenolithaceae

Sphenolithaceae

Classification: ntax_cenozoic -> Discoasterales -> Sphenolithaceae
Sister taxa: Discoasteraceae, Fasciculithaceae, Heliolithaceae, Sphenolithaceae

Daughter taxa: (blue => in age window 0-800Ma)					Granddaughter taxa
				Sphenolithus Conical nannoliths with a concave base, consisting of a mass of elements radiating from a common origin.	S. capricornutus group S. dissimilis group S. moriformis group S. heteromorphus group S. predistentus group S. furcatolithoides group S. radians group S. conspicuus group S. sp.

Taxonomy:

Citation: Sphenolithaceae Deflandre 1952

Rank: Family

Distinguishing features: Conical discoasteralids with a concave base, consisting of a mass of elements radiating from a common origin.

Farinacci & Howe catalog pages: Sphenolithaceae [no catalog entry yet]

Morphology: See genus Sphenolithus for discussion.

Phylogenetic relations: Sphenoliths first appear in the Palaeocene and go extinct in the mid Pliocene. They show some similarities to Fasciculithaceae and are thought to have similar origins.

Search data:

Tags	LITHS:
Metrics	Lith size: 2->20µm;

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): near base of Piacenzian Stage (14% up, 3.5Ma, in Piacenzian stage). Data source: Total of range of species in this database
First occurrence (base): near top of Danian Stage (90% up, 62.1Ma, in Danian 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: Discoasterales

References:

Deflandre, G. (1952). Classe des Coccolithophoridés. (Coccolithophoridae. Lohmann, 1902). In, Grassé, P. P. (ed.) Traité de Zoologie. Masson, Paris 439-470. gs

Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

Sphenolithaceae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-1-2021

Taxon Search:

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1276 Go to Archive.is to create a permanent copy of this page - citation notes

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