Fred Ruhe
Well-known member

The pygostylia (Confuciusornithiformes and alies) are followed by the Avibrevicauda.
For descriptions of all fossil Avialae see: https://www.birdforum.net/threads/descriptions-of-all-fossil-avialae.401773/
For descriptions of all fossil Atchaeopterygidae, Joholornithiformes and Yandangornithiformes see: https://www.birdforum.net/threads/descriptions-of-all-fossil-archaeopterygiformes.401785/
For descriptions of all fossil Rahonaviformes see: https://www.birdforum.net/threads/descriptions-of-all-fossil-rahonaviformes.402134/
For descriptions of all fossil Cinfuciusornithidae and Incertae Sedis see: https://www.birdforum.net/threads/descriptions-of-all-fossil-confuciusornithiformes.402143/
For descriptions of all fossil Strigiformes see: https://www.birdforum.net/threads/descriptions-of-all-fossil-strigiformes.394722/
Enjoy,
Fred
For descriptions of all fossil Avialae see: https://www.birdforum.net/threads/descriptions-of-all-fossil-avialae.401773/
For descriptions of all fossil Atchaeopterygidae, Joholornithiformes and Yandangornithiformes see: https://www.birdforum.net/threads/descriptions-of-all-fossil-archaeopterygiformes.401785/
For descriptions of all fossil Rahonaviformes see: https://www.birdforum.net/threads/descriptions-of-all-fossil-rahonaviformes.402134/
For descriptions of all fossil Cinfuciusornithidae and Incertae Sedis see: https://www.birdforum.net/threads/descriptions-of-all-fossil-confuciusornithiformes.402143/
For descriptions of all fossil Strigiformes see: https://www.birdforum.net/threads/descriptions-of-all-fossil-strigiformes.394722/
Enjoy,
Fred
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