sinornis การใช้

• A relationship with " Sinornis / Cathayornis " is suggested mainly by a peculiarly autapomorphic sternum.
• Well preserved specimens of Chinese species such as " Sinornis " and " Confuciusornis " have permitted scientists to better understand the birds'early fossil history.
• The holotype skeleton of " Sinornis " is preserved on part and counterpart slabs of fine-grained freshwater lake sediment and is associated with abundant fish, insect, and plant remains.
• A more recent, unpublished, unreviewed, analysis that includes many newly described Enantiornithes finds it closer to " Concornis " and " Cathayornis " ( or " Sinornis " ).
• Chiappe ( 1992 ) later reassigned the Avisauridae to the Avisaurus archibaldi " and all genera more closely related to it than to either " Longipteryx ", " Gobipteryx " or " Sinornis ".
• The best known example is the decrease in body size leading up to the first birds; " Archaeopteryx " was below 10 kg in weight, and later birds " Confuciusornis " and " Sinornis " are starling-to pigeon-sized.
• A cladistic analysis including many enantiornithine taxa places it in the " Cathayornithiformes ", grouping with " Sinornis " ( or " Cathayornis " ) and, surprisingly, " Neuquenornis volans " which was hitherto believed to belong to a different lineage of Euenantiornithes.
• Until the discovery of " Sinornis " scientists did not know much about the evolution of flight that lead to modern birds because " Archaeopteryx ", which lived in the Late Jurassic period around 150 million years ago, lacks many of the modern flight and perching of modern birds.
• However, also in 2001, Zhou and Hou continued to distinguish " Cathayornis " from " Sinornis " by the former's larger size, a shorter, straighter, finger number I, with a slightly longer claw ( ungual ), the absence of an atitrochanter, and other features.
• As well as shedding a new light on the early evolution of avian flight and perching that lead to modern birds . " Sinornis " is known only from the type species, " Sinornis santensis ", from the words " sino ",'China'; " ornis ",'bird'; and the word " santensis ", meaning " from three temples " ( for the traditional Chinese name for Chaoyoung county in Liaoning Province where the bird skeletons were found ).
• As well as shedding a new light on the early evolution of avian flight and perching that lead to modern birds . " Sinornis " is known only from the type species, " Sinornis santensis ", from the words " sino ",'China'; " ornis ",'bird'; and the word " santensis ", meaning " from three temples " ( for the traditional Chinese name for Chaoyoung county in Liaoning Province where the bird skeletons were found ).