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Fig. 3 | BMC Evolutionary Biology

Fig. 3

From: The Eurasian invasion: phylogenomic data reveal multiple Southeast Asian origins for Indian Dragon Lizards

Fig. 3

a Time-calibrated Bayesian analysis of ND2 and RAG-1 data, with black dots denoting nodes with posterior probabilities above 0.95, followed by the estimated divergence time for each node in MYA. Pink circles identify nodes where topology was constrained based on Likelihood and species tree analyses of UCE data (Fig. 2B). Brown circles indicate the four species groups. Biogeographic distributions of contemporary samples follow area coding depicted in Fig. 1, with probability of areas at ancestral nodes from our Bayesian analysis in RevBayes. Inferred dispersal events into India are labeled D#1 and D#2, resulting in Indian or Indian/Sri Lankan Salea, Sitana, and Otocryptis. b Hypothesized position of the ISC and an early Eocene land bridge allowing for the first inferred dispersal event (D#1 in a) from Eurasia into India, 50–55 MYA. c. Hypothesized position of the ISC and a middle-late Eocene land bridge allowing for the second first inferred dispersal event (D#2 in a) from Eurasia into India between 35–50 MYA (paleomaps modified from Klaus et al. [7])

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