Foraminiferal Evolution, Diversification, and Extinction

Vendeur : ConchBooks, Harxheim, AllemagneConchBooks

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A propos de cet article

Based on the latest information available, total foraminiferal generic and family diversity through time is plotted by geologic stages, as is planktonic generic diversity. Phylogenetic diagrams are presented for the foraminiferal families within each suborder, and relationships of suborders postulated. Because of the widely varied life habits and habitats of foraminifers, diversification and extinction of the order Foraminiferida as a whole probably is less meaningful than consideration of smaller groups. Thus, histograms are presented of generic diversity by geologic stage within each suborder. Increased diversification of planktonic taxa in the Mesozoic and Cenozoic has coincided with similar diversification of larger taxa of the Textulariina, Miliolina, and Rotaliina, and all have shown coincident times of extinction. These periods of diversification suggest a reliance on symbiosis under conditions of low nutrient supply related to extensive epicontinental seas, low-lying continents, stratified oceans, and depressed oceanic circulation. Any marked environmental change in the photic zone or in shallow waters of the continental shelves may reverse the evolutionary pattern and lead to extinction of the specialized taxa. Eutrophication, changed salinity, turbidity, temperature variation, or other environmental changes may cause loss of endosymbionts and death of the host, resulting in extinction of the larger foraminifers and plankton, while at the same time an emphasis on bacterial grazing or detritus feeding allowed survival and even the expansion of smaller benthic foraminifers. 20 pp., 23 figs, 4.…

N° de réf. du vendeur W35470

Détails bibliographiques

Titre
Foraminiferal Evolution, Diversification, and Extinction
Auteur
Tappan, H. & Loeblich, A. R.
Année de publication
1988

ConchBooks

Harxheim, Allemagne

Vendeur avec une évaluation de 4 étoiles

Vendeur AbeBooks depuis 1 mars 2007

Frais d'expédition de Allemagne vers Etats-Unis

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Founded in 1985 we are specialized in worldwide literature on Mollusca and marine invertebrates. Our publishing house has meanwhile published approximately 60 titles on that field of interest. We have stocks of most available international books on Malacology and a huge amount of antiquarian literature, even of the latter most titles are only available once.

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Weichtiere / Shells, Schnecken / Snails & Slugs, Muscheln / Bivalves, Tintenfische / Squids / Octopusses / Ammonites, Malacology, Conchology, Marine Biology