Mammalia
CHART I
HYPOTHETICAL PHYLOGENETIC RELATIONSHIPS
BETWEEN EXTANT MAJOR GROUPS
A v e s
OF ORGANISMS"
Pisces
VERTEBRATA
Cephalochordata
Urochordata \/
Mollusca
Echinodermata
Chactognatha
Brachiopoda
Ectoprocta
Phoronida
ARTHROPODA
Angiospermae
Annelida
Cymnospermae
Pterophyta
SPERMATOPHYTA
Ctenophora
Coelenterata
Sipunculoidea
Nemertinea
Platyhelminthes
Acanthocephala
Aschelminthes
Entoprocta
Calamophyta
Euglenopliyta
Chlorophyta
Eumycophyta
Myxomycophyta
Schizomycophyta
Cyanophyta
Pyrrophyta
Chrysophyta
y
Phaeophyta
— Rhodophyta
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