The sternum identified in the London specimen, by contrast, appeared unkeeled and this discrepancy led Petronievics to classify the Berlin specimen as a different genus, " Archaeornis ".
2.
Therefore, the Berlin specimen had at one point researchers arguing for both a separate genus and species name; Petronievics ( 1921 ) erected the genus " Archaeornis " and supported the claim that " " Archaeornis siemensii " " entirely lacked a pubic symphysis.
3.
Therefore, the Berlin specimen had at one point researchers arguing for both a separate genus and species name; Petronievics ( 1921 ) erected the genus " Archaeornis " and supported the claim that " " Archaeornis siemensii " " entirely lacked a pubic symphysis.
परिभाषा
extinct primitive toothed bird with a long feathered tail and three free clawed digits on each wing
मोबाइल