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The PEDIGREE of
Phylum Chordata

Born:  540 M BC


 Child:         Subphylum Vertebrata
______________________________________________________________ 
/-- Earliest life   +====> [ 33]
/-- Prokaryotes  (4000 M BC)
/-- Higher Prokaryotes
/-- Super-Empire of Eukaryotes and Eocytes
/-- Empire of Eukaryotes  (2100 M BC)
/-- Subempire of Mitochondrial life
/-- Complex mitochondrial life
/-- Infraempire of Plants and Animals
/-- Domain of Opisthokonts (Fungi and Animals)
/-- Kingdom of Animals
/-- Subkingdom of Metazoa (Multicellular Animals)
/-- Super-branch Eumetazoa
/-- Branch Bilateria
/-- Grade (Infrakingdom) of Coelomates  (570 M BC)
/-- Superphylum of Deuterostomes
/  
- Phylum Chordata
 

  ``3-Great Grandchild:''        Proto-Class of Warm-blooded Vertebrates
  ``8-Great Grandchildren:''        Subcohort [McKenna] Carnivora-Archonta-Ungulata   ;   Cohort (G) from Gondwana supercontinent   ;   Cohort (L-P) from Laurasia Supercontinent
 

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