Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
The Journal of Foraminiferal Research Signup for GSW Email News
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
The Journal of Foraminiferal Research; October 2003; v. 33; no. 4; p. 277-284; DOI: 10.2113/0330277
© 2003 Cushman Foundation for Foraminiferal Research
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Web of Science (2)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Holzmann, M.
Right arrow Articles by Pawlowski, j.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Article

MOLECULAR DATA REVEAL PARALLEL EVOLUTION IN NUMMULITID FORAMINIFERA

Maria Holzmann1, Johann Hohenegger1 and jan Pawlowski2

1 Institut für Paläontologie, Geozentrum, Universität Wien, 1090 Wien, Austria.
2 Department of Zoology and Animal Biology, University of Geneva, CH-1211 Geneva 4, Switzerland. E-mail: Jan.Pawlowski{at}zoo.unige.ch

Nummulitidae are the largest extant calcareous Foraminifera, and are widely distributed in tropical and subtropical shallow-water seas. Classical morphology-based taxonomy divides the Nummulitidae in two subfamilies, the Nummulitinae and Heterostegininae, according to the presence or absence of secondary septa. To test the evolutionary importance of this morphological feature, phylogenetic relationships of five Recent nummulitid genera were investigated by sequencing fragments of the SSU and LSU rRNA gene. According to our results, species characterized by septate chambers (Heterostegina depressa, Planostegina operculinoides, and Cycloclypeus carpenteri) either group with species lacking septate chambers (Operculina ammonoides, Nummulites venosus) or branch separately. This suggests that chamber subdivisions developed several times independently in the evolutionary history of the Nummulitidae, providing an example of parallel evolution in Foraminifera.




This article has been cited by other articles:


Home page
 MicropaleontologyHome page
E. K. Yordanova and J. Hohenegger
Morphoclines of living operculinid foraminifera based on quantitative characters
Micropaleontology, July 1, 2004; 50(2): 149 - 177.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2010 by Cushman Foundation for Foraminiferal Research