CATALOG OF ORIGINAL DESCRIPTIONS: Blefuscuiana excelsa cumulus Banner, Copestake, & White 1993
This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
Citation: Blefuscuiana excelsa cumulus Banner, Copestake, & White 1993taxonomic rank: sub-speciesType specimens: P52708Type sample (& lithostrat): Uppermost Valhall FormationType age (chronostrat): Early Aptian. Type locality: From a depth between 12,830 and 12,840 feet, Well 15/30-3, central North SeaType repository: London, UK; NHM
Original Description Characterised by its high spired test, with its very convex dorsal surface, and by having 5 chambers in the last whorl. Test about 0.20mm at its maximum diameter, comprising about 2-3 whorls coiled in high trochospire. There are about 5 chambers in each of the penultimate and last whorls. The spiral side is strongly convex, and the intercameral sutures are moderately depressed, forming angles of about 135-140 degrees at the periphery of the test. The chambers are symetrical and increase in size gradually with growth, becoming depressed, being about half as high as long in the last whorl (when viewed from the spiral side). The umbilicus is small and deep, and the aperture is probably a narrow slit. Perforation-cones have not been found on this species. Etymology: From cumulus meaning a heap or pile, referring to the chambers forming the high spire. Extra details from original publication REMARKS. B. excelsa cumulus differs from B. excelsa (Longoria) sensu stricto by its fewer chambers per whorl the latter has at least six. B. excelsa s.s. has been recorded only from the Early Aptian; B. excelsa cumulus is also known in this study, only from the Early Aptian of the North Sea area DISTRIBUTION. Central North Sea (Wells). STRATIGRAPHY. Early Aptian
References:
Banner, F. T., Copestake, P. & White, M. R. (1993). Barremian-Aptian Praehedbergellidae of the North Sea area: a reconnaisance. Bulletin of the Natural History Museum, London (Geology). 49: 1-30. gs
Blefuscuiana excelsa cumulus compiled by the pforams@mikrotax project teamviewed: 15-9-2024
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.
{"commentics_url":"\/\/www.mikrotax.org\/comments\/","page_id":455202,"enabled_country":true,"country_id":0,"enabled_state":false,"state_id":0,"enabled_upload":false,"maximum_upload_amount":3,"maximum_upload_size":5,"maximum_upload_total":5,"captcha":true,"captcha_url":"https:\/\/www.mikrotax.org\/comments\/frontend\/index.php?route=main\/form\/captcha&page_id=455202","cmtx_wait_for_comment":"cmtx_wait_for_comment","lang_error_file_num":"A maximum of %d files are allowed to be uploaded","lang_error_file_size":"Please upload files no bigger than %.1f MB in size","lang_error_file_total":"The total size of all files must be less than %.1f MB","lang_error_file_type":"Only image file types are allowed to be uploaded","lang_text_loading":"Loading ..","lang_placeholder_country":"Country","lang_placeholder_state":"State","lang_text_country_first":"Please select a country first","lang_button_submit":"Add Comment","lang_button_preview":"Preview","lang_button_remove":"Remove","lang_button_processing":"Please Wait.."}
Comments