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Abstract: The cumulative hierarchy conception of set, which is based on the conception that sets are inductively generated from "former" sets, is generally considered a good way to create a set concep...
A new species ofJeholornis with complete caudal integument
Jeholornis feathers rectrix long-tailed birds Jehol Group
2014/3/26
The Early Cretaceous long bony-tailed bird Jeholornis prima displays characters both more basal than Archaeopteryx and
more derived, exemplifying the mosaic distribution of advanced avian features th...