arrayname: original 
Nannotax3 - ntax_non_cocco - Petasaria protruberans Nannotax3 - ntax_non_cocco - Petasaria protruberans

Petasaria protruberans


Classification: ntax_non_cocco -> Haptophytes -> Prymnesiales -> Prymnesiaceae -> Petasaria -> Petasaria protruberans
Sister taxa: P. heterolepis, P. protruberans

Distinguishing features:
Parent taxon (Petasaria):
This taxon: Simlar to P. neolepis but with protruberance of variable length extending from rim of scales

Taxonomy:

Citation: Petasaria protruberans Jordan, Malinverno, Šupraha, Thomsen et Young
Taxonomic rank: species
Basionym: Petasaria protruberans Jordan, Malinverno, Šupraha, Thomsen et Young

Catalog entries: Petasaria protruberans

Distinguishing features:
Parent taxon (Petasaria):
This taxon: Simlar to P. neolepis but with protruberance of variable length extending from rim of scales

Original description: Cell shape unknown, only collapsed cells observed. Cell cover composed of 20-30 circular to oval siliceous scales, 2.7-3.1 μm x 2.5-2.9 μm. Distal surface of scale perfo- rated, except for a centrally raised hyaline patch and deep rectangular or circular groove. All scales with a short to long protuberance (0.3-4.0 μm x 0.3-1.3 μm) extending from rim of hyaline area, terminating in three to five short finger-like structures. Proximal surface with raised hyaline structure (corresponding to groove on distal side, and of similar shape) possessing short projections directed towards hyaline area. Rim slightly curved towards proximal side, more prominent near hyaline area and along protuberance.

Type images:


Morphology:

Cell shape unknown, only collapsed cells observed. Cell cover composed of 20-30 circular to oval siliceous scales, 2.7-3.1μm x 2.5-2.9μm. Distal surface of scale perforated, except for a centrally raised hyaline patch and deep rectangular or circular groove. All scales with a short to long protuberance (0.3-4.0μm x 0.3-1.3μm) extending from rim of hyaline area, terminating in three to five short finger-like structures. Proximal surface with raised hyaline structure (corresponding to groove on distal side, and of similar shape) possessing short projections directed towards hyaline area. Rim slightly curved towards proximal side, more prominent near hyaline area and along protuberance. [Jordan et al. 2016]

Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton
First occurrence (base): within no known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY]

References:

Jordan, R. W. et al. (2016). Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria. Micropaleontology. 61(6): 439-455. gs


nannotaxlogo400px

Petasaria protruberans compiled by Jeremy R. Young viewed: 25-3-2025

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=20286 Go to Archive.is to create a permanent copy of this page - citation notes
nannotaxlogo400px

Nannotax is being sponsored through 2024 by Woodside Energy and Shell USA


Add Comment

* Required information
Captcha Image

Comments

No comments yet. Be the first!