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Morphological disparity of ammonoids and the mark of Permian mass extinctions.
Science. 2004 Oct 08; 306(5694):264-6.Sci

Abstract

The taxonomic diversity of ammonoids, in terms of the number of taxa preserved, provides an incomplete picture of the extinction pattern during the Permian because of a strongly biased fossil record. The analysis of morphological disparity (the variety of shell shapes) is a powerful complementary tool for testing hypotheses about the selectivity of extinction and permits the recognition of three distinct patterns. First, a trend of decreasing disparity, ranging for about 30 million years, led to a minimum disparity immediately before the Permian-Triassic boundary. Second, the strongly selective Capitanian crisis fits a model of background extinction driven by standard environmental changes. Third, the end-Permian mass extinction operated as a random, nonselective sorting of morphologies, which is consistent with a catastrophic cause.

Authors+Show Affiliations

Centre de Sédimentologie-Paléontologie, FRE CNRS 2761, Université de Provence, 3 place Victor-Hugo, F-13331 Marseille Cedex 3, France. lvillier@up.univ-mrs.frNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15472073

Citation

Villier, Loïc, and Dieter Korn. "Morphological Disparity of Ammonoids and the Mark of Permian Mass Extinctions." Science (New York, N.Y.), vol. 306, no. 5694, 2004, pp. 264-6.
Villier L, Korn D. Morphological disparity of ammonoids and the mark of Permian mass extinctions. Science. 2004;306(5694):264-6.
Villier, L., & Korn, D. (2004). Morphological disparity of ammonoids and the mark of Permian mass extinctions. Science (New York, N.Y.), 306(5694), 264-6.
Villier L, Korn D. Morphological Disparity of Ammonoids and the Mark of Permian Mass Extinctions. Science. 2004 Oct 8;306(5694):264-6. PubMed PMID: 15472073.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Morphological disparity of ammonoids and the mark of Permian mass extinctions. AU - Villier,Loïc, AU - Korn,Dieter, PY - 2004/10/9/pubmed PY - 2004/10/22/medline PY - 2004/10/9/entrez SP - 264 EP - 6 JF - Science (New York, N.Y.) JO - Science VL - 306 IS - 5694 N2 - The taxonomic diversity of ammonoids, in terms of the number of taxa preserved, provides an incomplete picture of the extinction pattern during the Permian because of a strongly biased fossil record. The analysis of morphological disparity (the variety of shell shapes) is a powerful complementary tool for testing hypotheses about the selectivity of extinction and permits the recognition of three distinct patterns. First, a trend of decreasing disparity, ranging for about 30 million years, led to a minimum disparity immediately before the Permian-Triassic boundary. Second, the strongly selective Capitanian crisis fits a model of background extinction driven by standard environmental changes. Third, the end-Permian mass extinction operated as a random, nonselective sorting of morphologies, which is consistent with a catastrophic cause. SN - 1095-9203 UR - https://www.unboundmedicine.com/medline/citation/15472073/Morphological_disparity_of_ammonoids_and_the_mark_of_Permian_mass_extinctions_ L2 - http://www.sciencemag.org/cgi/pmidlookup?view=long&pmid=15472073 DB - PRIME DP - Unbound Medicine ER -