Cracking new paper from the Bristol #Palaeobiology Research Group shows the key mammalian (dentary-squamosal) jaw joint is not actually unique to #mammals, having evolved independently in #Triassic ictidosaur #cynodonts.
#Palaeontology #Science #EvolutionaryBiology
www.nature.com/articles/s41...
nature.com
Brazilian fossils reveal homoplasy in the oldest mammalian jaw joint - Nature
The dentary–squamosal contact, traditionally considered to be a typical mammalian feature, evolved more than once and is more evolutionary labile than previously considered.
