Nephrolithus


Classification: Mesozoic -> Podorhabdales -> Axopodorhabdaceae -> Nephrolithus
Sister taxa: Axopodorhabdus, Cribrocorona, Cribrosphaerella, Dodekapodorhabdus, Ethmorhabdus, Hemipodorhabdus, Hexapodorhabdus, Nephrolithus, Octocyclus, Octopodorhabdus, Perissocyclus, Podorhabdus, Psyktosphaera, Teichorhabdus, Tetrapodorhabdus,

Distinguishing features: Reniform; central-area net with two to numerous pores


Daughter taxa: (blue => in age window 0-800Ma) Granddaughter taxa
Central area with 2-60 perforations each defined by rather irregular elongate crystals

Central area with 2-15 perforations each surrounded by neat rings of rhombic elements

Specimens not identified to species level

Taxonomy:

Citation: Nephrolithus Górka 1957
Rank: Genus
Type species: Nephrolithus frequens Górka, 1957

Farinacci & Howe catalog pages: Nephrolithus + *

Distinguishing features: Reniform; central-area net with two to numerous pores

Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Campanian Stage (59% up, 76.8Ma, in Campanian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs

Górka, H. (1957). Les Coccolithophoridés du Maestrichtien supérieur de Pologne. Acta Palaeontologica Polonica. 2: 239-284. gs

Wind, F. H. & Wise, S. W. (1983). Correlation of upper Campanian-lower Maestrichtian calcareous nannofossil assemblages in drill and piston cores from the Falkland Plateau, southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 551-563. gs

Wind, F. H. (1983). The genus Nephrolithus Górka, 1957 (Coccolithophoridae). Journal of Paleontology. 57: 157-161. gs


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Nephrolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 13-11-2019

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10796 Go to Archive.is to create a permanent copy of this page - citation notes



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