The PEDIGREE of
Phylum Xenacoelomorpha (gutless Acoels)

 
     (controversial clading; sometimes broken into separate phyla; previously included in Platyhelminthes); aka Phylum Acoelomorpha (simple soft-bodied flatworms)

 "Child(ren)":       Class Acoela   ;   Class Nemertodermatida   ;  poss.   Phylum Xenoturbellida (Strange Flatworms)
 poss. "Partner(s)":       Clade Ambulacraria
________________________________________________________________________________________________________ 
/-- prob.  Kingdom Crenarchaeota   +====> [ 44]
/   / or: T.A.C.K. Subdomain
/-- (NN), a very special Archaeote
/-- pre-Eukaryote
/  \-- Pre-Mitochondrion Bacterium   +====> [ 51]
/-- proto-Eukaryote
/  \-- (NN), a thermophilic Bacterium   +====> [ 49]
/-- The First Eukaryote
/ OR: First Eukaryote [Lopez-Garcia - Moreira M.   +====> [ 51]
/  \-- (NN), a (thermophilic?) Bacterium   +====> [ 47]
/-- Domain of Eukaryotes  (2100 M BC)
/-- Superempire Unikonta
/   / OR: Kingdom Opisthokonta (Seven-Kingdom Model)   +====> [ 56]
/-- Empire of Opisthokonts (Fungi & Animals)
/   / OR: Opisthokonts (Fungi & Animals) [Cavalier-Smith model]   +====> [ 67]
/-- Superkingdom Holozoa
/-- Kingdom of Apoikozoa (Animals)  (950 M BC)
/-- Subkingdom of Metazoa (Multicellular Animals)
/-- Superbranch Eumetazoa
/-- Superphylum Planulozoa
/-- Clade of Bilateria and Placozoa
/   / (skip this generation?)
/-- Branch Bilateria
/  
- Phylum Xenacoelomorpha (gutless Acoels)
 

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