mexican west coast rattlesnake or mexican green rattler

anapsida anatomy archosauria chordata closeup concept diapsida effect germany lepidosauria mexican nature one animal reptile single vertebrate alethinophidia basiliskenklapperschlange brown cincinnati crotalinae crotalus basiliscus face green head individual lacertilia lemker looking at camera rattler west coast rattlesnake pit viper pitviper poison poisonous rolled up sauria serpentes snake squamata venomous viperidae wild