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|Title:||Exceptional disparity in Australian Agamid lizards is a possible result of arrival into vacant niche|
|Citation:||Anatomical Record, 2019; 302(9):1536-1543|
|Jaimi A. Gray, Mark N. Hutchinson, Marc E.H. Jones|
|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. Anat Rec, 2019. © 2019 Wiley Periodicals, Inc.|
|Keywords:||Agamidae; cranium; iguania; morphological disparity; ternary diagram|
|Rights:||© 2019 Wiley Periodicals, Inc.|
|Appears in Collections:||Environment Institute publications|
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