New analysis suggests that Sydney funnel-web spiders represent three distinct species; the revised taxonomy may have practical implications for antivenom production and biochemical studies on spider venom.

Palaeontologists have described a new genus and species of unenlagiine dinosaur named Diuqin lechiguanae from the Upper Cretaceous Bajo de la Carpa Formation in Argentina, filling a substantial gap in the fossil record of these theropods…

The expensive brain hypothesis in amphibians and reptiles