Phanerozoic trends in the global diversity of marine invertebrates
- Alroy, J.
- Aberhan, M.
- Bottjer, D.J.
- Foote, M.
- Fursich, F.T.
- Harries, P.J.
- Hendy, A.J.W.
- Holland, S.M.
- Ivany, L.C.
- Kiessling, W.
- Kosnik, M.A.
- Marshall, C.R.
- McGowan, A.J.
- Miller, A.I.
- Olszewski, T.D.
- Patzkowsky, M.E.
- Peters, S.E.
- Villier, L.
- Wagner, P.J.
- Bonuso, N.
- Borkow, P.S.
- Brenneis, B.
- Clapham, M.E.
- Fall, L.M.
- Ferguson, C.A.
- Hanson, V.L.
- Krug, A.Z.
- Layou, K.M.
- Leckey, E.H.
- Nurnberg, S.
- Powers, C.M.
- Sessa, J.A.
- Simpson, C.
- Tomasovych, A.
- Visaggi, C.C.
Publication date
July 2008
DOI Publisher
American Association for the Advancement of Science (AAAS) ISSN
0036-8075 Citation count (estimate)
368Abstract
It has previously been thought that there was a steep Cretaceous and Cenozoic radiation of marine invertebrates. This pattern can be replicated with a new data set of fossil occurrences representing 3.5 million specimens, but only when older analytical protocols are used. Moreover, analyses that employ sampling standardization and more robust counting methods show a modest rise in diversity with no clear trend after the mid-Cretaceous. Globally, locally, and at both high and low latitudes, diversity was less than twice as high in the Neogene as in the mid-Paleozoic. The ratio of global to local richness has changed little, and a latitudinal diversity gradient was present in the early Paleozoic
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