CATALOG OF ORIGINAL DESCRIPTIONS: Civisina Apellániz et al. 2002

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.


Higher levels: pf_cat -> C -> Civisina
Other pages this level: Candeina, Canderotalia, Candorbulina, Carinoturborotalia, Cassidulina, Cassigerinella, Cassigerinelloita, Catapsydrax, Caucasella, Chiloguembelina, Chiloguembelinella, Chiloguembelitria, Ciperoella, Civisina, Clavatorella, Claviblowiella, Clavigerinella, Clavihedbergella, Claviticinella, Compactogerina, Conoglobigerina, Contusotruncana, Coscinosphaera, Costellagerina, Cribrohantkenina, Cuneolina,

Daughter taxa: (blue => in age window 0-800Ma)

Civisina

Citation: Civisina Apellániz et al. 2002
Rank: Genus
Type species: Civisina euskalherriensis Apellániz et al. 2002

Current identification/main database link:


Original Description
Diagnosis: Test trochospiral with characteristic aperture extending onto the peripheral margin of the youngest chamber. Chamber surface smooth, wall microperforate. Size smaller than 200 µm.

Description: The species included in this genus have a trochospiral test. The spiral side varies from flat to moderately convex whereas the umibilical one is distinctly convex. The shape of chambers changes during ontogeny from rounded to somewhat flattened. Sutures between chambers depressed, straight to slightly curved on spiral side, and straight on umbilical side. Axial profile varying from rounded to slightly angular, equatorial profile lobate. Aperture very characteristic, umbilical-extraumbilical, but in final chamber extending onto the peripheral margin. Umbilicus small and rather deep. Surface of test smooth with very small perforations (microperforate). With 5 to 8 chambers in the last whorl.

Size: Size of the test varying from 50 µm to 200 µm.

Etymology: dedicated to Dr. JORGE CIVIS, micropaleontologist at the University of Salamanca for his contribution to the knowledge of the Neogene benthic foraminifera.

Extra details from original publication
Similarities and differences: The very characteristic shape of the aperture separates the representatives of this genus from those of all other Paleocene genera.

Remarks: This new genus includes the species Civisina longiapertura (Blow, 1979) and Civisina euskalherriensis n. sp. Specimens included here into the genus Civisina based on their characteristic aperture have been figured previously but attributed to Globorotalia (Turborotalia) by Blow (1979), to Globigerina by Smit (1982), to Parvularugoglobigerina by Brinkhuis & Zachariasse (1988), Keller et al. (1995), Apellaniz et al. (1997), Olsson et al (1999) and others.

References:

Apellániz, E., Orue-Etxebarría, X. & Luterbacher, H. (2002). Evolution of the early Paleocene planktonic foraminifera: a Basque point of view. Neues Jahrbuch für Geologie und Palaeontologie Abhandlungen. 225: 157-194. gs :: ::

Blow, W. H. (1979). The Cainozoic Globigerinida: A study of the morphology, taxonomy, evolutionary relationships and stratigraphical distribution of some Globigerinida (mainly Globigerinacea). E. J. Brill, Leiden. 2: 1-1413. gs :: ::

Brinkhuis, H. & Zachariasse, W. (1988). Dinoflagellate cysts, sea level changes and planktonic foraminifers across the Cretaceous-Tertiary boundary at El Haria, northwest Tunisia. Marine Micropaleontology. 13(2): 153-191. gs :: ::

Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. 1-252. gs :: ::

Smit, J. (1982). Extinction and Evolution of planktonic foraminifera after a major impact at the Cretaceous/Tertiary boundary. In, Silver, L. T. & Schultz, P. H. (eds) Geological Implications of Impacts of Large Asteroids and Comets on the Earth, Geological Society of America Special Paper 190. 329-352. gs :: ::


logo

Civisina compiled by the pforams@mikrotax project team viewed: 13-7-2020

Taxon Search:
Advanced Search

Short stable page link: http://mikrotax.org/pforams/index.php?id=130191 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics