animals
What Does 'Crown Group' Refer To In Archosaur Definition?
š” The Answer
- 'Crown group' refers to the most recent common ancestor of living birds and crocodilians.
- It includes all descendants of that ancestor.
- This definition is used by modern paleontologists for Archosauria.
- It contrasts with stem groups that exclude some modern lineages.
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On This Day ā August 23 events ā
1873 ā The Clay Street Hill Railroad begins operating the first cable car in San Franci
1873 ā The Clay Street Hill Railroad begins operating the first cable car in San Franci
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