Prymnesium polylepis

Taxonomy:

Original description: Motile cells showing some metaboly; generally ovoid but sometimes sub-spheroidal, with flagellar pole obliquely truncate and depressed centrally to produce a groove across one axis; larger individuals conspicuously flattened and with a protruding lip (or hump) on one side of the flagellar pole; 6-12 µm, in length by 5-9 µm in breadth. The appendages arising close together centrally from the depression; the flagella subequal, or of equal length, very occasionally unequal, homodynamic, 2-3 times body length, very fine, smooth, apex gradually attenuated to a small knob (E.M. observation); the haptonema capable of attaching only by its distal swollen tip, thinner than the flagella, from 1 - 1½ times body length when fully extended, with an internal structure of three concentric membranes surrounding a ring of seven fibres.

Four scale types present:

• large plates with upturned rims (average dimensions 1.4 x 1.2 µm), 
• small plates with rims flexed towards outer surface and with two bulbosities near the centre on the outer side (average dimensions 0.8 x 0.6 µm), about twice as numerous as the large plates, 
• narrow elliptical plates with rim flattened against outer face (average dimensions 1.2 x 0.6 µm), less numerous than the large plates and probably present in a group near the flagellar pole, 
• a few (1-3) large elliptical plates (average dimensions 2.5 x 0.9 µm) with rims and a forked excrescence at one end, situated at the flagellar pole.

Farinacci & Howe catalog pages: Chrysochromulina polylepis

Morphology:

Geological Range:
Last occurrence (top): Extant. Data source:
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:

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: Prymnesium

Prymnesium polylepis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-5-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=20401 Go to Archive.is to create a permanent copy of this page - citation notes

Add Comment

* Required information

Comment

Name

Email

Country

Captcha

Notify me of new comments via email

Remember my form inputs on this computer

I have read and agree to the terms and conditions

x

Insert Bullet List

Please enter at least one item.

Item:

Item:

Item:

Item:

Item:

x

Insert Numeric List

Please enter at least one item.

Item:

Item:

Item:

Item:

Item:

x

Insert Image

Please enter the link of the image

x

Privacy Policy

This policy contains information about your privacy. By posting, you are declaring that you understand this policy:

• Your name, rating, website address, town, country, state and comment will be publicly displayed if entered.
• Aside from the data entered into these form fields, other stored data about your comment will include:
  • Your IP address (not displayed)
  • The time/date of your submission (displayed)
• Your email address will not be shared. It is collected for only two reasons:
  • Administrative purposes, should a need to contact you arise.
  • To inform you of new comments, should you subscribe to receive notifications.
• A cookie may be set on your computer. This is used to remember your inputs. It will expire by itself.

This policy is subject to change at any time and without notice.

x

Terms and Conditions

These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:

• Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
• You acknowledge that all comments express the views and opinions of the original author and not those of the administrator.
• You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy.
• The administrator has the right to edit, move or remove any comment for any reason and without notice.

Failure to comply with these rules may result in being banned from submitting further comments.

These terms and conditions are subject to change at any time and without notice.

Comments

No comments yet. Be the first!

x