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Cretaceous foraminifera and the evolutionary history of planktic photosymbiosis
- Source :
- Paleobiology. 24:512-523
- Publication Year :
- 1998
- Publisher :
- Cambridge University Press (CUP), 1998.
-
Abstract
- Ecotypic correlations between stable isotopic signals and skeletal size indicate that some Late Cretaceous serial planktic foraminifera were strongly photosymbiotic. In contrast, coeval trochospiral planktic foraminifera do not exhibit the isotope/size signatures that typify strongly photosymbiotic species. Comparison to Cenozoic taxa demonstrates that photosymbiosis has recurred throughout planktic foraminiferal history and has evolved independently in superfamilies characterized by very different gross skeletal morphologies. The historical contingency of that evolution is illustrated by the consequences of the Cretaceous/Paleogene mass extinction, which terminated the Cretaceous lineages of photosymbiotic planktic foraminifera but did not permanently extinguish photosymbiont reliance by planktic foraminifera.
- Subjects :
- 0106 biological sciences
Extinction event
010506 paleontology
Ecology
biology
Paleontology
biology.organism_classification
010603 evolutionary biology
01 natural sciences
Cretaceous
Foraminifera
General Agricultural and Biological Sciences
Paleogene
Cenozoic
Ecology, Evolution, Behavior and Systematics
Geology
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 19385331 and 00948373
- Volume :
- 24
- Database :
- OpenAIRE
- Journal :
- Paleobiology
- Accession number :
- edsair.doi...........88a312323cdb8d1a4282519a2ad06241