Mammalia
CHART I
HYPOTHETICAL PHYLOGENETIC RELATIONSHIPS
BETWEEN EXTANT MAJOR GROUPS
OF ORGANISMS*
Pisces
VERTEBRATA
Cephalochordata
Urochordata
\ /
Mollusca
Echinodermata
Chaetognatha
Brachiopoda
Ectoprocta
Phoronida
ARTHROPODA
Angiospermae
Annelida
Gymnospermae
Ctenophora
Coelenterata
Sipunculoidea
Nemertinea
Platyhelminthes
Acanthocephala
Aschelminthes
Entoprocta
Euglenophyta
Protozoa
Lichenes
Eumycophyta ,
Myxomycophyta
Schizomycophyta
Cyanophyta
Chlorophyta
Pyrrophyta
Chrysophyta
Phaeophyta
Rhodophyta
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