Climbing life's tree

@article{Budd2001ClimbingLT,
  title={Climbing life's tree},
  author={Graham E. Budd},
  journal={Nature},
  year={2001},
  volume={412},
  pages={487-487}
}
  • G. Budd
  • Published 2 August 2001
  • Biology, Medicine
  • Nature

Are palaeoscolecids ancestral ecdysozoans?

It is concluded that previous interpretations in which palaeoscolecids occupy a deeper position in the ecdysozoan tree lack particular morphological support and rely instead on a paucity of preserved characters, bears out a more general point that fossil taxa may appear plesiomorphic merely because they preserve only plesiomorphies, rather than the mélange of primitive and derived characters anticipated of organisms properly allocated to a position deep within animal phylogeny.

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  • Biology
    Evolution & development
  • 2001
SUMMARY Segmentation as an attribute of organisms is being increasingly discussed in the recent literature because (1) new phylogenies suggest that organisms classically considered to be segmented

Typological thinking

A popular narrative about the history of modern biology has it that Ernst Mayr introduced the distinction between “typological thinking” and “population thinking” to mark a contrast between a

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Typological thinking: Then and now

  • J. Witteveen
  • Art
    Journal of experimental zoology. Part B, Molecular and developmental evolution
  • 2018
It is shown that the authors can make historical and philosophical sense of the continued accusations of typological thinking by looking beyond Mayr, to his contemporary and colleague George Gaylord Simpson, who introduced the typology/population distinction to mark several contrasts in methodology and scientific practice.

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ITS data, while useful at lower taxonomic levels, are of limited value for inferring deeper phylogenetic relationships and it is suggested that the establishment of a standardized taxonomic system based on divergence times could result in a more objective, and biologically more meaningful, taxonomic ranking of fungi.

The Fossil Record of the Cambrian “Explosion”: Resolving the Tree of Life1

In the last number of years, fossil discoveries from around the world, and particularly in China, have enabled the reconstruction of many of the deep branches within the invertebrate animal tree of

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Testing morphological and diving data from a comprehensive data set, including living and extinct pinnipeds and other select carnivorans as outgroup taxa, demonstrates deep diving has evolved multiple times in crown Pinnipedia.