Hexalithus geometricus
Classification: ntax_mesozoic -> hidden -> deleted -> Hexalithus geometricus
Sister taxa: A. variabilis, A. confusa, A. paucipunctata, C. noeliae subsp. depressa, C. noeliae subsp. noeliae, C. noeliae subsp. recondita, Centosphaera, C. barbata, C. ocellatus, C. prinsii, C. deflandrei (morphotype A), C. deflandrei (morphotype B), C. asymmetricus, H. geometricus, M. bramlettei, N. erbae, Obliquipithonella, O. prasina, O. rhombica, Orthopithonella, O. geometrica, O. misurinae, P. fletcheri, P. bownii, P. geometrica, P. triassica subsp. punctata, P. triassica subsp. triassica, P. charlotteii, P. fistulatus> >>
Distinguishing features: Elements with indented edges.
Taxonomy:
Citation: Hexalithus geometricus Casellato, 2010Rank: species
Farinacci & Howe catalog pages: H. geometricus *
Distinguishing features: Elements with indented edges.
Search data:
| Tags | LITHS: |
| Metrics | Lith size: 0->0µm; |
The morphological data given here can be used on the advanced search page. See also these notes
Geological Range:
Last occurrence (top): within Berriasian Stage (139.39-145.01Ma, top in Berriasian stage). Data source: Casellato, 2010
First occurrence (base): in upper part of NJT17a subzone (70% up, 145.8Ma, in Tithonian stage). Data source: Casellato 2010, fig16 - secondary marker
Plot of occurrence data:
- Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
- Triangles indicate an event for which a precise placement has been suggested
- (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: deleted
References:
Casellato, C. E. (2010). Calcareous nannofossil biostratigraphy of Upper Callovian - Lower Berriasian successions from the Souhern Alps, North Italy. Rivista Italiana di Paleontologia e Stratigrafia. 116(3): 357-404. gs V O
