Nannotax3 - ntax_cenozoic - Tectulithus Nannotax3 - ntax_cenozoic - Tectulithus

Tectulithus


Classification: ntax_cenozoic -> Discoasterales -> Fasciculithaceae -> Tectulithus
Sister taxa: Diantholitha, Fasciculithus, Gomphiolithus, Lithoptychius, Tectulithus

Daughter taxa (time control age-window is: 0-800Ma)
Tectulithus janii
Cylindrical column with narrow waist and a wide, disc-like apical cycle that is crystallographically distinct.
Tectulithus merloti

Tectulithus pagodiformis

Tectulithus pileatus
Cylindrical column that broadens distally and a wide, disc-like apical cycle that is crystallographically distinct.
Tectulithus stegastos

Tectulithus stonehengei

Tectulithus sp.

Taxonomy:

Citation: Tectulithus Miniatti Cappelli & Monechi 2021
taxonomic rank: genus
Basionym: Tectulithus Miniatti Cappelli & Monechi 2021
Type species: "Fasciculithus ulii Perch-Nielsen, 1971"
Taxonomic discussion: This genus is distinctive. The specimens show significant variation but it is not clear how many species are present, Miniati et al. (2021) recognise six species, but this may prove excessive.

Distinguishing features:
Parent taxon (Fasciculithaceae): Conical or cylindrical discoasteralids consisting of 10-30 wedge-shaped, radially-arranged elements, in one to three superposed cycles.
This taxon: Complex fasciculiths - formed of two discrete cycles; no fenestrae

Farinacci & Howe catalog pages: Tectulithus *

Search data:
Lith size: 0->0µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of NP6 zone (100% up, 59Ma, in Thanetian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within NP4 zone (61.51-63.25Ma, base in Danian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Miniati, F., Cappelli, C. & Monechi, S. (2021). Revised taxonomy and early evolution of fasciculiths at the Danian–Selandian transition. Journal of Micropalaeontology. 40: 101-144. gs O


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Tectulithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-5-2024

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1725 Go to Archive.is to create a permanent copy of this page - citation notes
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