Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Holococcoliths formed from two blocks divided by a transverse suture.
Daughter taxa (time control age-window is: 0-800Ma) | ||||
Bifidalithus geminicatillus Narrow rim around edge of blocks, no pore | ||||
Bifidalithus mchanae Pore on each block, no rim | ||||
Bifidalithus sp. Specimens not identified to species level |
Taxonomy:
Farinacci & Howe catalog pages: Bifidalithus *
Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Holococcoliths formed from two blocks divided by a transverse suture.
Search data:
LITHS: holococcolith, elliptical, CA: ca_disjunct, pores, CROSS-POLARS: rim-unicyclic, V-prominent, |
Lith size: 4->7µm; Data source notes: size range of included species |
Geological Range:
Last occurrence (top): at top of Early Maastrichtian Substage (100% up, 70.1Ma, in Maastrichtian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Early Santonian Substage (85.20-85.70Ma, base in Santonian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O Varol, O. (1991). New Cretaceous and Tertiary Calcareous Nannofossils. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 182: 211-237. gsReferences:
Bifidalithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 9-9-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10058 Go to Archive.is to create a permanent copy of this page - citation notes |
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