Eighty-five million years of Pacific Ocean gyre ecosystem structure: long-term stability marked by punctuated change

@article{Sibert2016EightyfiveMY,
  title={Eighty-five million years of Pacific Ocean gyre ecosystem structure: long-term stability marked by punctuated change},
  author={Elizabeth C. Sibert and Richard D. Norris and Jos{\'e} Mar{\'i}a Cuevas and Lana G Graves},
  journal={Proceedings of the Royal Society B: Biological Sciences},
  year={2016},
  volume={283}
}
While the history of taxonomic diversification in open ocean lineages of ray-finned fish and elasmobranchs is increasingly known, the evolution of their roles within the open ocean ecosystem remains poorly understood. To assess the relative importance of these groups through time, we measured the accumulation rate of microfossil fish teeth and elasmobranch dermal denticles (ichthyoliths) in deep-sea sediment cores from the North and South Pacific gyres over the past 85 million years (Myr). We… Expand
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References

SHOWING 1-10 OF 44 REFERENCES
New Age of Fishes initiated by the Cretaceous−Paleogene mass extinction
Significance Ray-finned fishes are the most diverse and ecologically dominant group of vertebrates on the planet. Previous molecular phylogenies and paleontological studies have shown that modernExpand
Marine tetrapod macroevolution: Physical and biological drivers on 250 Ma of invasions and evolution in ocean ecosystems
TLDR
Placed in a broad comparative view from the Mesozoic to the Cenozoic eras, the macroevolution of marine tetrapods reveals evolutionary drivers at different scales, along with morphological parallels, unique evolutionary innovations, and the strong influence of historical constraints. Expand
Five hundred million years of extinction and recovery: a phanerozoic survey of large‐scale diversity patterns in fishes
TLDR
A broad overview of the Phanerozoic history of fish diversity is provided, placing a special emphasis on intervals of turnover, evolutionary radiation, and extinction. Expand
Climate, Critters, and Cetaceans: Cenozoic Drivers of the Evolution of Modern Whales
TLDR
Based on a comprehensive diversity data set, much of observed cetacean paleodiversity can indeed be explained by diatom diversity in conjunction with variations in climate as indicated by oxygen stable isotope records (δ18O). Expand
Radiation of Extant Cetaceans Driven by Restructuring of the Oceans
TLDR
It is found that the toothed whales are monophyletic, suggesting that echolocation evolved only once early in that lineage some 36–34 Ma, and support is found for increased diversification rates during periods of pronounced physical restructuring of the oceans. Expand
Cenozoic cooling, Antarctic nutrient pump, and the evolution of whales
Abstract The evolution of large marine mammals and their invasion of the pelagic realm is tied to the availability of sufficient food, which in turn is linked to upwelling areas and other highlyExpand
Ocean overturning since the Late Cretaceous: Inferences from a new benthic foraminiferal isotope compilation
[1] Benthic foraminiferal oxygen isotopic (d 18 O) and carbon isotopic (d 13 C) trends, constructed from compilations of data series from multiple ocean sites, provide one of the primary means ofExpand
Explosive morphological diversification of spiny-finned teleost fishes in the aftermath of the end-Cretaceous extinction
  • M. Friedman
  • Biology, Medicine
  • Proceedings of the Royal Society B: Biological Sciences
  • 2010
TLDR
The trajectory of morphological diversification in this major radiation from its first appearance in the Late Cretaceous to the Miocene is reconstructed using a geometric morphometric database comprising more than 600 extinct species known from complete body fossils to suggest that multiple factors contributed to the prolific anatomical radiation of acanthomorphs. Expand
The effect of habitat on modern shark diversification
TLDR
The new timetree suggests that the two major shark lineages leading to the extant shark diversity began diversifying mostly after the end‐Permian mass extinction: the squalimorphs into deepwater and the galeomorphs into shelf habitats. Expand
Resolution of ray-finned fish phylogeny and timing of diversification
Ray-finned fishes make up half of all living vertebrate species. Nearly all ray-finned fishes are teleosts, which include most commercially important fish species, several model organisms forExpand
...
1
2
3
4
5
...