Hornibrookina australis


Classification: ntax_cenozoic -> Isochrysidales -> Prinsiaceae -> Hornibrookina -> Hornibrookina australis
Sister taxa: H. edwardsii, H. teuriensis ⟩⟨ H. arca, H. australis ⟩⟨ H. weimerae, H. apellanizii, H. sp.

Taxonomy:

Citation: Hornibrookina australis Edwards & Perch-Nielsen, 1975
Rank: Species
Taxonomic discussion: Similar to Hornibrookina teuriensis Edwards, 1973 but reported as smaller and less regular in outline. Also may lack a longitudinal component in the central grill.

Distinguishing features: Small to medium sized, narrowly elliptical to lenticular, arched, central area with 8-10 pairs of lateral bars.

Farinacci & Howe catalog pages: H. australis *

Search data:
TagsLITHS: placolith, elliptical, CA: ca_disjunct, grill,
CSPH: equant, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 4->7µm;
Data source notes: illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP10 zone (54.17-55.86Ma, top in Ypresian stage). Data source: Perch-Nielsen 1985b
First occurrence (base): within NP6 zone (58.97-59.54Ma, base in Selandian stage). Data source: Perch-Nielsen 1985

Plot of occurrence data:

References:

Edwards, A. R. & Perch-Nielsen, K. (1975). Calcareous nannofossils from the southern Southwest Pacific, Deep Sea Drilling Project, Leg 29. Initial Reports of the Deep Sea Drilling Project. 29: 469-539. gs V O

Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

Pospichal, J. J. & Wise, S. W. (1990c). Paleocene to Middle Eocene calcareous nannofossils of ODP sites 689 and 690, Maud Rise, Weddell Sea. Proceedings of the Ocean Drilling Program, Scientific Results. 113: 613-638. gs V O

Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs V O


nannotaxlogo400px

Hornibrookina australis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=735 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics