Avemetatarsalia ( meaning `` bird metatarsals '' ) is a clade name established by British palaeontologist Michael Benton in 1999 for all crown group archosaurs that are closer to birds than to crocodiles .
Avemetatarsalia ( meaning `` bird toes '' ) is a clade name established in 1999 for all crown group archosaurs that are closer to birds than to crocodiles .