Hello list,
Hopefully I may be forgiven for discussing pterosaurs on a dinosaur
list, but some speculation concerning possible contributing factors to
pterosaur extinction coincident to the K/T boundary event(s) comes to mind.
"Event(s)" is used here in reference not only to the impact event, per se,
but to various environmental changes initiated by it over an undetermined
period of time.
Please consider what follows as speculation or questions about what
might, conceivably, have happened, rather that as established fact:
It seems likely that the initial impact event would have caused very
severe winds not only within a few thousand kilometers radius to the impact,
but even world-wide, within a very short time compared to the development
time of more normal weather/wind systems. At a somewhat lessened level,
very severe weather/wind systems would probably have continued, world-wide,
for weeks or maybe even months.