A fossil fish found in Yunnan, China, has filled in a gaping hole in how researchers thought the vertebrate jaw evolved.
The 423-million-year-old specimen, dubbed Qilinyu rostrata, is part of an ancient group of armoured fish called placoderms. The fossil is the oldest ever found with a modern three-part jaw, which includes two bones in the upper jaw and one in the lower jaw. Researchers reported their find on 20 October in Science.
The US National Science Foundation (NSF) has quietly reinstated its programme to support biological specimen collections that are important for studying disease, invasive species, climate change and conservation. Scientists had protested against the agency’s decision, announced in March, to suspend the programme pending an evaluation that is due later this year.
The cabinets of the Field Museum in Chicago hold a collection of eggs that led to one of the most famous conservation discoveries of the twentieth century: that the pesticide DDT was causing widespread nesting failures in birds of prey.
But such specimen troves — which are used to identify species, track diseases and study climate change — have lost a valuable means of support. Last week, the US National Science Foundation (NSF) announced that it would indefinitely suspend a programme that provides funding to maintain biological research collections.
Move over, T. rex: There’s a new toughest dinosaur in town. One specimen of Dilophosaurus (portrayed in Jurassic Park—inaccurately—as a venom-spitting dino with a neck frill) survived a record-breaking eight bone injuries in its front limbs and shoulder.