Mammaliaform extinctions as a driver of the morphological radiation of Cenozoic mammals

@article{Brocklehurst2021MammaliaformEA,
  title={Mammaliaform extinctions as a driver of the morphological radiation of Cenozoic mammals},
  author={Neil Brocklehurst and Elsa Panciroli and Gemma Louise Benevento and Roger B. J. Benson},
  journal={Current Biology},
  year={2021},
  volume={31},
  pages={2955-2963.e4}
}

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References

SHOWING 1-10 OF 81 REFERENCES

Adaptive radiation of multituberculate mammals before the extinction of dinosaurs

It is shown that in arguably the most evolutionarily successful clade of Mesozoic mammals, the Multituberculata, an adaptive radiation began at least 20 million years before the extinction of non-avian dinosaurs and continued across the Cretaceous–Paleogene boundary.

Evidence for a Mid-Jurassic Adaptive Radiation in Mammals

Therian mammals experience an ecomorphological radiation during the Late Cretaceous and selective extinction at the K–Pg boundary

The conflicting diversity and disparity patterns suggest that earliest Palaeocene extinction survivors, especially eutherian dietary generalists, underwent rapid taxonomic diversification without considerable morphological diversification.

Mammal disparity decreases during the Cretaceous angiosperm radiation

It is concluded that during the mid-Cretaceous, the period of rapid angiosperm radiation, mammals experienced both a decrease in morphological disparity and a functional shift in dietary morphology that were probably related to changing ecosystems.

Resolving the relationships of Paleocene placental mammals

The largest cladistic analysis of Paleocene placentals to date is presented, from a data matrix including 177 taxa (130 of which are Palaeogene) and 680 morphological characters, and supports an Atlantogenata–Boreoeutheria split at the root of crown Placentalia, the presence of phenacodontids as closest relatives of Perissodactyla, and the validity of Euungulata.

Untangling the Multiple Ecological Radiations of Early Mammals.

Eutherians experienced elevated evolutionary rates in the immediate aftermath of the Cretaceous–Palaeogene mass extinction

It is shown that Placentalia likely originated in the Late Cretaceous, but that most intraordinal diversification occurred during the earliest Palaeocene, supporting the view that an evolutionary radiation occurred as placental lineages invaded new ecological niches during the EarlyPalaeocene.

Ontogenetic niche shifts in dinosaurs influenced size, diversity and extinction in terrestrial vertebrates

A model is developed that quantifies the impact of size-specific interspecies competition on abundances of differently sized dinosaurs and mammals, taking into account the extended niche breadth realized during ontogeny among large oviparous species and predicts low diversity at intermediate size classes, consistent with observed diversity distributions of dinosaurs, and of Mesozoic land vertebrates in general.

Patterns of mammalian jaw ecomorphological disparity during the Mesozoic/Cenozoic transition

Total mammal disparity exceeded its Mesozoic maximum for the first time during the Eocene, when therian mammals began exploring previously unoccupied regions of function space, and probably reflects the duration of evolutionary recovery after the K/Pg mass extinction event.

Phylogenetic evidence for a shift in the mode of mammalian body size evolution at the Cretaceous‐Palaeogene boundary

  • G. Slater
  • Environmental Science, Geography
  • 2013
This study uses a time‐calibrated phylogeny of living and fossil Mammaliaformes as a framework to test novel models of body size evolution derived from palaeontological theory, and finds that a model comprising an Ornstein–Uhlenbeck process until the K‐Pg event and a Brownian motion process from the Cenozoic onwards was the best supported model.
...