31. Are dinosaurs extinct? Theropod dinosaurs are the bipedal (\"two-footed\") c

Question

31. Are dinosaurs extinct?

Theropod dinosaurs are the bipedal ("two-footed") carnivores of Tyrannosaurus rex fame that many people imagine when they think of dinosaurssharp teeth, claws, long tails, and a taste for flesh. Did these dinosaurs go extinct?

Part A

The graph below shows evidence of what event 66 million years ago?

The graph below shows evidence of what event 66 million years ago?

Source: Godefroit, P., A. Cau, H. Dong-Yu, et al. 2013. Nature 498: 359362. Tyrannosauroidea Oviraptorosauria Dromaeosauridae Troodontidea Aurornis Archaeopteryx Rahonavis Shenzouraptor Balaur Confuciusomis Euornithes (true birds") Enantiornithes 180 160 140 120 100 80 60 40 Million years ago

Explanation / Answer

This graph shows the K-pg event.

As K-pg event tells us about the mass extinction of dinosaurs and not birds.

In this graph, it is seen that all the dinosaurs became extinct together.

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