Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
![]() | ![]() | ![]() | Neobiscutum parvulum Very small elliptical placoliths with narrow to closed central area. | |
Neobiscutum romeinii Very small elliptical placoliths with open central area spanned by a net. | ||||
Neobiscutum sp. Specimens which cannot be assigned to any established species |
Taxonomy:
Distinguishing features: Very small to small placoliths with closed or narrow central areas. Shields are dark in XPL with bright tube cycle.
Farinacci & Howe catalog pages: Neobiscutum *
Search data:Tags | LITHS: placolith, elliptical, CA: ca_conjunct, CSPH: equant, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent, |
Metrics | Lith size: 2->3µm; |
Geological Range:
Last occurrence (top): near base of Danian Stage (13% up, 65.5Ma, in Danian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Danian Stage (0% up, 66Ma, in Danian stage). Data source: Total of range of species in this database
Plot of occurrence data:
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Neobiscutum compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-4-2021
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=899 Go to Archive.is to create a permanent copy of this page - citation notes |