Nannotax3 - ntax_non_cocco - Angulolithina arca Nannotax3 - ntax_non_cocco - Angulolithina arca

Angulolithina arca

Classification: ntax_non_cocco -> Ascidian spicules -> Angulolithina -> Angulolithina arca
Sister taxa: A. arca, A. sp.


Citation: Angulolithina arca Bukry 1973
Rank: Species
Taxonomic discussion: Probably a spurious species based on pairs of ascidian spicules.
These forms resemble Ceratolithus cristatus but are more angular and have different crystallographic orientation (c-axis parallel to length in ascidian spicules vs perpendicular to length in C. cristatus)

Catalog entries:

12-15µm long (Bukry 1973)

Geological Range:
Last occurrence (top): Extant. Data source: JRY unpubl. obs.
First occurrence (base): within Late Miocene Sub-Epoch (5.33-11.62Ma, base in Tortonian stage). Data source: Original description


Bukry, D. (1973c). Coccolith stratigraphy, eastern equatorial Pacific, Leg 16, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 16: 653-711. gs O

Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 225-265. gs V O


Angulolithina arca compiled by Jeremy R. Young viewed: 29-3-2023

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