The PEDIGREE of
Clade of Archosauria

    Note: It seems a severe violation of taxonomy that the Class of Birds is just part of an Infraclass within Reptiles, but that is the conclusion of modern genetic studies. Similarly, all tetrapods descend from the class of lobe-finned fishes. For related reasons, a clade like Sauropsida is sometimes called Subclass, sometimes Superclass!

 "Child(ren)":       Superorder Crocodylomorpha (Crurotarsi)   ;   Superclass Ornithodira
________________________________________________________________________________________________________ 
/-- Clade Craniata   +====> [ 78]
/-- Subphylum Vertebrata
/-- Infraphylum Gnathostomata (Jawed Vertebrates)
/-- Microphylum Teleostomi (Bony fishes & Spiny sharks)
/-- Superclass Osteichthyes (Bony fishes)
/-- Class Sarcopterygii (Lobe-finned Fishes)
/-- Clade of Rhipidistia
/-- Subclass Tetrapodamorpha
/-- Infraphylum Tetrapoda
/-- Clade Reptiliomorpha
/-- Microphylum Amniota (Mammals, Reptiles, etc.)
/-- Class Sauropsida (Reptiles)
/-- Clade Romeriida
/-- Subclass Diapsida
/-- Infraclass Archosauromorpha
/  
- Clade of Archosauria
 
 
  ``3-Great Grandchildren:''       Subfamily Alligatorinae   ;   Clade Tetanurae
 
  ``9-Great Grandchildren:''       Clade Ornithothoraces   ;   Tyrannosaurus rex
 

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