Riddle me this, paleofaggots. How is it that dromaeosaurs allegedly had pennaceous wing feathers because of "quill knobs", yet somehow terror bird ulnae don't show any signs of quill knobs? >this is no evidence for the absence of pennaceous feathers, it indicates that they were not as strongly anchoredYet terror birds obviously derived from flying ancestors where pennaceous feathers would be a strong ancestral trait, yet dromaeosaurs who did not derive from flying ancestors and were totally flightless themselves did have these attachment points for strong pennacious feathers. What the fuck did they need those for that a terror bird would not have a need for?Make it make sense
Because God desired it to be.
>>5083959Evolution is not guided by purpose or needing things to do things. Its random mutations and unusually well attached feathers necessarily predate flight.
Uhhh paleofriction rubbed them off
>>5083959Literally the same bone,They have the same cracks.
>>5083959It's still debated whether or not dromaeosaurids were secondarily flightless, evolving from flying ancestors. Also many dromaeosaurids that lived in forests may have had arboreal tendencies, their claws and limbs are very suitable to climbing and their feet can even ball up into a fist. Anchored feathers can help a climbing dromaeosaur parachute down from up high. Finally another more outlandish theory is that some juvenile dromaeosaurids could fly or glide and lose the ability as adults similar to giant coots. All that said I don't think it's likely that giant dromaeosaurids like utahraptor, austroraptor, or achillobator had pennaceous feathers. Especially now that dakotaraptor the only one that had evidence of quill knobs turned out to be chimeric and lost even more material to nanotyrannus making it extremely fragmentary.
>>5083959Patagornis and Llallawavis had quill knobs with the latter being one of most complete terror bird skeletons we have
>>5083959>Yet ratites obviously derived from flying ancestors where pennaceous feathers would be a strong ancestral trait, yet dromaeosaurs who did not derive from flying ancestors and were totally flightless themselves did have these attachment points for strong pennacious feathers. What the fuck did they need those for that a ratite would not have a need for?Make it make sense
>>5084920Not very sharp are you anon
>>5084953I wouldn't count out Dakotaraptor just yet, I've spoken with enough hell creek fossil hunters an paleontologists to know at the smallest there is at the lowest size range an at least deinonychus sized dromeosaurid present in hell creek, its just to this date way to fragmentary to bother describing or noting in the literature.
>>5084956The ratites have lost their arms, next they will lose their legs.They shall join the likes of snakes, legless lizards, and caecilians in returning to the basal chordid form the tetrapods ruined.
Who would have thought all those faggot dinosaur kids would grow up the be even more annoying faggot dinosaur adults
>>5083959Anon don't give feather fags the attention they crave. They know what they're spreading is false and stupid. They're trolls.
i suddenly find feather fag arguments more compelling now that a trip fag told me not to listen to them
>>5084920You might be retarded anon
