首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Larger foraminifera as a substratum for encrusting bryozoans (Late Oligocene,Tethyan Seaway,Iran)
Authors:B Berning  M Reuter  W E Piller  M Harzhauser  A Kroh
Institution:1.Institut für Erdwissenschaften,Universit?t Graz,Graz,Austria;2.Ober?sterreichische Landesmuseen,Geowissenschaftliche Sammlungen,Linz-Leonding,Austria;3.Naturhistorisches Museum Wien,Vienna,Austria
Abstract:Considering the diversity and abundance of larger foraminifera examined from a wide range of Late Oligocene to Early Miocene palaeoenvironments in the Tethyan Seaway, encrusting bryozoans make extremely little use of their tests as substratum. Significant encrustations by bryozoans were exclusively found on large (ø c. 6 cm), undulating tests of Lepidocyclina spp., on which, however, a remarkable 34 taxa of encrusting bryozoans were recorded. This shallow-water fauna of Chattian age was analyzed in respect of the bryozoan taxa present, colony growth type, and mode of budding, colony size, as well as onset of reproduction. Taxic and morphological similarities between the fossil assemblage and modern faunas encrusting mobile substrata indicate a long history of bryozoans as part of the interstitial habitat, while the tests of certain larger foraminifera may have played a significant role in the evolution of shallow-water bryozoans by providing substrata for encrusting species in otherwise unfavorable environments.
Keywords:Bryozoa  Interstitial  Larger foraminifera  Palaeoecology  Tethys
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号