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Evidence of hierarchical organization in the planktic foraminiferal evolutionary record

R. Timothy Patterson, Anthony D. Fowler and Brian T. Huber
Evidence of hierarchical organization in the planktic foraminiferal evolutionary record
Journal of Foraminiferal Research (April 2004) 34 (2): 85-95

Abstract

The Wavelet Transform was used to analyze the evolutionary record of planktic foraminifera to distinguish specific structure not previously resolvable. Both the speciation and extinction wavelets are characterized by a major singularity at the Cretaceous-Tertiary (K-T) boundary, when there was a total breakdown in the interconnectedness of ecosystems related to sharply reduced diversity following the Chicxulub impact event. The speciation wavelet is also characterized by an interval consisting of a hierarchical array of five orders of bifurcation, which are related to repeated iterative radiation of species from the Albian to Maastrichtian. These planktic foraminiferal extinction patterns were related to quasi-periodic orogenic cycles of the Cretaceous that, in turn, produced episodic mantle CO (sub 2) -degassing, oceanic volcanism and anoxia, and sea level fluctuations. We hypothesize that the hierarchical structure observed is a reflection of this process in an otherwise stochastic system.


ISSN: 0096-1191
EISSN: 1943-264X
Coden: JFARAH
Serial Title: Journal of Foraminiferal Research
Serial Volume: 34
Serial Issue: 2
Title: Evidence of hierarchical organization in the planktic foraminiferal evolutionary record
Affiliation: Carleton University, Carleton Geoscience Centre, Ottawa, ON, Canada
Pages: 85-95
Published: 200404
Text Language: English
Publisher: Cushman Foundation for Foraminiferal Research, Ithaca, NY, United States
References: 31
Accession Number: 2004-075715
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendices
Illustration Description: illus.
Secondary Affiliation: University of Ottawa, CAN, CanadaSmithsonian Institution, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200422
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