Distinguishing features: Elliptical; central area with diagonal cross or offset crossbars bars, supporting hollow spine
Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
![]() | ![]() | Tetrapodorhabdus coptensis Podorhabdids with central area spanned by diagonal cross bars. | ||
Tetrapodorhabdus decorus Podorhabdid with central area spanned by relatively high angle diagonal cross bars that bear a large, flaring spine. | ||||
![]() | ![]() | ![]() | Tetrapodorhabdus shawensis Podorhabdid with central area spanned by asymmetric diagonal cross. | |
Tetrapodorhabdus sp. Specimens not identified to species level |
Taxonomy:
Farinacci & Howe catalog pages: Tetrapodorhabdus *
Distinguishing features: Elliptical; central area with diagonal cross or offset crossbars bars, supporting hollow spine
Search data:Tags | LITHS: placolith, elliptical, CA: ca_disjunct, process, diagonal cross, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent, |
Metrics | Lith size: 4->12µm; Data source notes: size range of included species |
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 Bajocian Stage (82% up, 168.6Ma, in Bajocian stage). Data source: Total of range of species in this database
Plot of occurrence data:
Black, M. (1971a). Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society. 38: 381-424. gs 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 Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs Grün, W. & Allemann, F. (1975). The Lower Cretaceous of Caravaca (Spain): Berriasian Calcareous Nannoplankton of the Miravetes Section (Subbetic Zone, Prov. of Murcia). Eclogae Geologicae Helvetiae. 68: 147-211. gs V OReferences:
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Tetrapodorhabdus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11206 Go to Archive.is to create a permanent copy of this page - citation notes |