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lidiya [134]
3 years ago
13

What is the selection pressure for dinosaurs evolving into birds?

Biology
1 answer:
s2008m [1.1K]3 years ago
3 0
In the 1990s, an influx of new dinosaur fossils from China revealed a feathery surprise. Though many of these fossils lacked wings, they had a panoply of plumage, from fuzzy bristles to fully articulated quills. The discovery of these new intermediary species, which filled in the spotty fossil record, triggered a change in how paleontologists conceived of the dinosaur-to-bird transition. Feathers, once thought unique to birds, must have evolved in dinosaurs long before birds developed.
As dinosaurs morphed into birds, they shrank dramatically and adopted a more babylike skull shape.
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