(Figure 2) Distribution of planktonic foraminifera in the upper Paleocene of DSDP Hole 93-605 ...

Good faunal preservation in the upper part of the Planorotatites pseudomenardii Zone at Deep Sea Drilling Project Site 605, northwestern Atlantic, allows a biometric analysis of the upper Paleocene planktonic foraminiferal species Planorotatites pseudomenardii (Belli), a keeled species that probably...

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Bibliographic Details
Main Authors: Nederbragt, Alexandra J, von Hinte, J E
Format: Dataset
Language:English
Published: PANGAEA 1987
Subjects:
Sample code/label
DEPTH, sediment/rock
Radiolarians abundance
Foraminifera, benthic
Subbotina triloculinoides
Subbotina velascoensis
Acarinina mckannai
Morozovella pusilla
Morozovella angulata
Morozovella aequa
Morozovella occlusa
Morozovella acuta
Planorotalites chapmani
Planorotalites pseudomenardii
Subbotina primitiva
Acarinina soldadoensis
Drilling/drill rig
DSDP/ODP/IODP sample designation
Leg93
Glomar Challenger
Deep Sea Drilling Project DSDP
Planktonic foraminifera
Online Access:https://dx.doi.org/10.1594/pangaea.250715
https://doi.pangaea.de/10.1594/PANGAEA.250715
Description
Summary:Good faunal preservation in the upper part of the Planorotatites pseudomenardii Zone at Deep Sea Drilling Project Site 605, northwestern Atlantic, allows a biometric analysis of the upper Paleocene planktonic foraminiferal species Planorotatites pseudomenardii (Belli), a keeled species that probably developed from a middle Paleocene unkeeled Planorotalites form. Multivariate analysis shows a consistent separation of all Planorotatites specimens into two groups, which are differentiated by the presence or absence of a complete keel; other variables are only of minor importance. The keeled group coincides with P. pseudomenardii. We recognize only one unkeeled species, Planorotalites chapmani (Parr), with Planorotalites ehrenbergi (Bolli), Planorotalites imitata (Subbotina), Planorotalites planoconica (Subbotina), Planorotalites troelseni (Loeblich and Tappan), and Planorotalites hausbergensis (Gohrbrandt) as junior synonyms. P. chapmani ranges from the middle Paleocene to at least the top of the upper ... : D = dominant, A = abundant, C = common, R = rare, ? = questionable, - = absent. ...

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