arrayname: original 

Lophocyrtis jacchia hapsis

Taxonomy

Catalog entries: Lophocyrtis jacchia hapsis

Original description: Three-segmented robust form with a long conical horn. Cephalis spherical, commonly with small, subcircular pores or, rarely, poreless. Apical spine partially free in the cephalic cavity, protruding outside as a strong, conical apicalhorn, roughened or with a few small thorns near the distal end. Base of the apical spine is variably expressed as dimples, coalescing arches or short hollow tubes. Mitral arches have not been observed. The median bar is short and horizontal, and the vertical bar directed upward, rarely protruding as a short, weak spine. Cephalis separated from the thorax by a distinct change in external contour associated with the presence of six to ten large pores separated by strong trabeculae, some of which are derived from the extensions of the spines from the fundamental spicule. Thorax hemispherical with roughened surface, and quincuncially arranged subcircular pores. The abdomen is somewhat thinner walled than the thorax, cylindrical to tapering, sometimesinflated in its proximal part. Abdominal pores vary from similar in size and arrangement to the thoracic ones, to very variable in size and arrangement. Lumbar stricture may or may not bemarked on the external contour of the shell. Usually, the pores just below the lumbar stricture are two to three times as large asthe remaining ones. Termination variable, often consisting of a poreless band from which three short, triangular feet originate, or undifferentiated with three terminal and/or subterminal short, conical feet. Rare specimens have been observed with a closed abdomen and short terminal feet.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Bartonian Stage (37.75-41.15Ma, top in Bartonian stage). Data source:
First occurrence (base): within Bartonian Stage (37.75-41.15Ma, base in Bartonian 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: Lophocyrtis jacchia

Lophocyrtis jacchia hapsis compiled by the radiolaria@mikrotax project team viewed: 23-4-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/radiolaria/index.php?id=206314 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