2015/07/27 by Emma Sherratt, María del Rosario Castañeda, Russell J. Garwood +5 · 1 citation
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Fossil Insects in Amber #Plant and animal studies #Insect and Arachnid Ecology and Behavior #Anolis #Lizard #Biology #Clade #Ecomorphology #Ecology #Iguanidae #Phylogenetic tree #Paleontology #Sauria #Habitat
paper · pdf · doi:10.1073/pnas.1506516112
openalex publication_date 2015/07/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.