Not all the feathers found by Dr McKellar were so primitive, though.

不过，McKellar博士发现的羽毛并不都是远古时代的。

The top picture shows similar filaments discovered by Dr McKellar and his team, suggesting flightless dinosaurs sporting such protofeathers were still around in the late Cretaceous.

上图所示为麦凯乐博士及其研究小组发现的类似丝状的羽毛，表明长有这些原生羽毛的“非鸟”恐龙在白垩纪后期仍然存活着。