A refined modelling approach to assess the influence of sampling on palaeobiodiversity curves: new support for declining Cretaceous dinosaur richness

Graeme T. Lloyd

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)

Abstract

Modelling has been underdeveloped with respect to constructing palaeobiodiversity curves, but it offers an additional tool for removing sampling from their estimation. Here, an alternative to subsampling approaches, which often require large sample sizes, is explored by the extension and refinement of a pre-existing modelling technique that uses a geological proxy for sampling. Application of the model to the three main clades of dinosaurs suggests that much of their diversity fluctuations cannot be explained by sampling alone. Furthermore, there is new support for a long-term decline in their diversity leading up to the Cretaceous-Paleogene (K-Pg) extinction event. At present, use of this method with data that includes either Lagerstätten or 'Pull of the Recent' biases is inappropriate, although partial solutions are offered.
Original languageEnglish
Pages (from-to)123-126
Number of pages4
JournalBiology Letters
Volume8
Issue number1
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • modelling
  • sampling bias
  • palaeobiodiversity
  • subsampling
  • dinosaurs

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