Amber fossils demonstrate deep-time stability of Caribbean lizard communities
Date
2015
Authors
Sherratt, E.
Del Rosario Castañeda, M.
Garwood, R.
Mahler, D.
Sanger, T.
Herrel, A.
De Queiroz, K.
Losos, J.
Hillis, D.
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Volume Title
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Journal article
Citation
Proceedings of the National Academy of Sciences of the United States of America, 2015; 112(32):9961-9966
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Emma Sherratt, María del Rosario Castañeda, Russell J. Garwood, D. Luke Mahler, Thomas J. Sanger, Anthony Herrel, Kevin de Queiroz and Jonathan B. Losos
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Abstract
Whether the structure of ecological communities can exhibit stability over macroevolutionary timescales has long been debated. The similarity of independently evolved Anolis lizard communities on environmentally similar Greater Antillean islands supports the notion that community evolution is deterministic. However, a dearth of Caribbean Anolis fossils--only three have been described to date--has precluded direct investigation of the stability of anole communities through time. Here we report on an additional 17 fossil anoles in Dominican amber dating to 15-20 My before the present. Using data collected primarily by X-ray microcomputed tomography (X-ray micro-CT), we demonstrate that the main elements of Hispaniolan anole ecomorphological diversity were in place in the Miocene. Phylogenetic analysis yields results consistent with the hypothesis that the ecomorphs that evolved in the Miocene are members of the same ecomorph clades extant today. The primary axes of ecomorphological diversity in the Hispaniolan anole fauna appear to have changed little between the Miocene and the present, providing evidence for the stability of ecological communities over macroevolutionary timescales.
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For volumes 106–114 (2009–September 2017), the author(s) retains copyright to individual articles, and NAS retains an exclusive License to Publish these articles and holds copyright to the collective work. Volumes 90–105 (1993–2008) are copyright National Academy of Sciences. For volumes 1–89 (1915–1992), the author(s) retains copyright to individual articles, and NAS holds copyright to the collective work.