Schizosphaerella


Classification: Mesozoic -> Mesozoic non–coccoliths -> Schizosphaerellaceae -> Schizosphaerella
Sister taxa: Schizosphaerella,

Distinguishing features: Large globular test with two interlocking sub-hemispherical valves formed from a geometric arrangement of equidimensional crystallites.


Daughter taxa: (blue => in age window 0-800Ma)
Large globular test with two interlocking sub-hemispherical valves formed from a geometric arrangement of equidimensional crystallites.
Specimens not identified to species level

Taxonomy:

Citation: Schizosphaerella Deflandre & Dangeard, 1938
Rank: Genus
Type species: Schizosphaerella punctulata Deflandre and Dangeard, 1938.
Synonyms: Nannopatina Stradner 1961 Nipterula Farinacci 1969

Farinacci & Howe catalog pages: Schizosphaerella * , Nannopatina * , Nipterula * ,

Distinguishing features: Large globular test with two interlocking sub-hemispherical valves formed from a geometric arrangement of equidimensional crystallites.

Geological Range:
Last occurrence (top): at top of Kimmeridgian Stage (100% up, 152.1Ma, in Kimmeridgian stage). Data source: Total of range of species in this database
First occurrence (base): near base of Hettangian Stage (11% up, 201.1Ma, in Hettangian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs

Deflandre, G. & Dangeard, L. (1938). Schizosphaerella, un nouveau microfossile méconnu du Jurassique moyen et supérieur. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences. Paris. 207: 1115-1117. gs


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Schizosphaerella compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-7-2019

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11069 Go to Archive.is to create a permanent copy of this page - citation notes



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