The idea is quite old:
Shortly after the 1859 publication of Charles Darwin’s On the Origin of Species, the British biologist Thomas Henry Huxley proposed that birds were descendants of dinosaurs. He compared the skeletal structure of Compsognathus, a small theropod dinosaur, and the “first bird” Archaeopteryx lithographica (both of which were found in the Upper Jurassic Bavarian limestone of Solnhofen). He showed that, apart from its hands and feathers, Archaeopteryx was quite similar to Compsognathus.
But having fossil evidence is quite young:
One of the earliest discoveries of possible feather impressions by non-avian dinosaurs is a trace fossil (Fulicopus lyellii) of the 195–199 million year old Portland Formation in the northeastern United States. Gierlinski (1996, 1997, 1998) and Kundrát (2004) have interpreted traces between two footprints in this fossil as feather impressions from the belly of a squatting dilophosaurid.
Since 2001 here in WA we have a system where petrol stations have to lock in their price for a day by announcing it the afternoon before. The highlights used to be mentioned on the local news and newspaper (maybe they still are, who knows?). But more importantly they all get published on https://www.fuelwatch.wa.gov.au/ so its pretty trivial to visit the site in the afternoon and check the stores along the commute home, plus you can also compare their tomorrow price to see if you should wait until then.
Looking at that site right now I can see 25% variance across my commute without even considering a detour. Its a pretty handy system.