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Exceptional Disparity in Australian Agamid Lizards Is a Possible Result of Arrival into Vacant Niche

Gray, JA; Hutchinson, MN; Jones, MEH; (2019) Exceptional Disparity in Australian Agamid Lizards Is a Possible Result of Arrival into Vacant Niche. The Anatomical Record , 302 (9) pp. 1536-1543. 10.1002/ar.24096. Green open access

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Abstract

Australia provides abundant examples of continental-scale evolutionary radiations. The collision of two continental shelves around 30 Ma facilitated an influx of squamates and the subsequent squamate radiations resulted in high taxonomic diversity. The morphological disparity seen in these major squamate groups, however, remains underexplored. Here, we examine the major cranial proportions of over 1,000 specimens using 2D linear measurements to explicitly quantify the morphological disparity of Australian agamid lizards (Amphibolurinae) and compare it to that of agamid, acrodont, and iguanian clades from other parts of the world. Our results indicate the Australian Amphibolurinae have exceptionally high cranial disparity, and we suggest that this is linked to the relaxed selective environment that greeted the founders of Amphibolurinae when they first arrived in Australia.

Type: Article
Title: Exceptional Disparity in Australian Agamid Lizards Is a Possible Result of Arrival into Vacant Niche
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/ar.24096
Publisher version: https://doi.org/10.1002/ar.24096
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Agamidae, cranium, iguania, morphological disparity, ternary diagram
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Cell and Developmental Biology
URI: https://discovery.ucl.ac.uk/id/eprint/10075018
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