Siphocampe bassilis

Taxonomy

Catalog entries: Theocampe bassilis

Original description: Shell of three segments, thin, hyaline; cephalis and thorax together conical; abdomen long, subcylindrical. Both thorax and abdomen elliptical in transverse section with largest dimension in sagittal plane. Cephalis bears a horizontal tube and in most specimens a tiny apical horn; pores sparse, small, circular. Internally, weak paired ridges extend from apical spine to sides of vertical spine. A dorsal branch from the apical spine, just below the apex, extends to the cephalic wall. There are six collar pores and an additional pair of pores ventrally to them on the lower wall of the tube. Axial spines, possibly five in number, are very variable in size, some extend into the abdomen (longest 70µ). Thorax with minute nodes and rarely ridges over all; circular pores widely spaced, those above lumbar stricture forming a transverse row. Lumbar stricture well-defined, externally by a change in contour and internally by a distinct shelf. Abdomen with subcircular to subquadrangular pores, generally with prongs on their margin, in up to ten, perhaps more, transverse rows; the first immediately below the lumbar stricture. Rows approximately evenly spaced, except distally where the shell thins, constricts slightly, and rows are more closely spaced. Distal margin smooth.

Description

Biogeography and Palaeobiology

Similar species

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"

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
• Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
• Taxon plotted: Siphocampe bassilis, synonyms included - Siphocampe bassilis; Theocampe ? bassilis; Theocampe bassilis;
• See also space-time plot :: Samples map :: Parent: Siphocampe

Siphocampe bassilis compiled by the radiolaria@mikrotax project team viewed: 8-12-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205382 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