CATALOG OF ORIGINAL DESCRIPTIONS: Planomalina Loeblich & Tappan, 1946

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 -> P -> Planomalina
Other pages this level: Palaeoglobigerina, Paracostellagerina, Paragloborotalia, Paraspiroplecta, Parasubbotina, Parathalmanninella, Paraticinella, Parkerina, Parvularugoglobigerina, Pearsonites, Pessagnoina, Phanerostomum, Planoglobanomalina, Planoglobulina, Planoheterohelix, Planomalina, Planorotalites, Planulina, Planulitella, Plummerita, Plummerita (Radotruncana), Polskanella, Polyperibola, Porticulasphaera, Postrugoglobigerina, Praeglobotruncana, Praeglobotruncana (Clavihedbergella), Praeglobotruncana (Falsomarginotruncana), Praegublerina, Praehedbergella, Praemurica, > >>

Daughter taxa: (blue => in age window 0-800Ma)
= Globigerinelloides alvarezi
= Planomalina buxtorfi
= Globigerinelloides blowi
= Globigerinelloides bentonensis
= Globigerinelloides ehrenbergi
= Globigerinelloides maridalensis
= Globigerinelloides asper
= Globigerinelloides mendezensis
= Planomalina praebuxtorfi
= Globigerinelloides pulchellus
= Globigerinelloides mendezensis
= Pseudoschackoina saundersi
= Globigerinelloides yaucoensis

Planomalina

Citation: Planomalina Loeblich & Tappan, 1946
Rank: Genus
Type species: Planomalina apsidostroba Loeblich and Tappan 1946

Current identification/main database link: Planomalina Loeblich and Tappan 1946


Original Description
Test free, planispiral, partially evolute, so that earlier coils may be seen on both sides of the biumbilicate test; chambers numerous; sutures may be limbate; wall calcareous, coarsely perforate; apertnuor peripheral, an arch at the base of the aptertural face of the last-formed chamber, with a distinct lip. 

Extra details from original publication
This genus is probably derived from Anomalina d'Orbigny by the loss of the early trochoid stage and the development of a completely planispiral test. The aperture has also become peripheral, losing the ventral extension. Planomalina, n. gen., resembles Palmerinella Bermudez in the presence of the apertural lip, and Planulina in the shape of the chambers and evolute character of the test (such as Planulina ariminensis d'Orbigny) and the position of the aperture, but Planomalina differs from both of these in lacking any trochoid development.

References:

Loeblich, A. R. & Tappan, H. (1946). New Washita Foraminifera. Journal of Paleontology. 20: 238-258. gs


logo

Planomalina compiled by the pforams@mikrotax project team viewed: 7-4-2020

Taxon Search:
Advanced Search

Short stable page link: http://mikrotax.org/pforams/index.php?id=131955 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