1
Phylum Annelida
2
Segmented Worms
•
Body divided into
repeating segments
3
Sedentary
4
Terrestrial
•
Earthworm
5
Feed on Blood
•
Leech
6
Myxozoa
Myxozoa
Arthropoda
Arthropoda
Annelida
Annelida
Mollusca
Mollusca
Lophophores
Lophophores
Hemichordata
Hemichordata
Vertebrata
Vertebrata
Other
Other
pseudocoelomates
pseudocoelomates
Nematoda
Nematoda
Porifera
Porifera
Ctenophora
Ctenophora
Cnidaria
Cnidaria
Placozoa
Placozoa
Platyhelminthes
Platyhelminthes
Nemertea
Nemertea
Ciliophora
Ciliophora
Sarcomastigophora
Sarcomastigophora
Microspora
Microspora
Apicomplexa
Apicomplexa
Mesozoa
Mesozoa
Echinodermata
Echinodermata
Crustacea
Crustacea
Chelicerata
Chelicerata
Uniramia
Uniramia
Other Chordata
Other Chordata
7
Phylum Annelida
•
Segmented body
–
metameric
•
Setae
–
Absent in leeches
•
Coelom divided by
septa
•
Closed circulatory
system
•
Nephridia for each
segment (metamere)
8
Circulatory Systems
9
Septa
Septa
Prostomium
Prostomium
Pygidium
Pygidium
Peristomium
Peristomium
Metamerism
10
Trochophore larva
Apical tuft
Apical tuft
Mouth
Mouth
Anus
Anus
Ciliary band
Ciliary band
Stomach
Stomach
11
Annelid development
12
Class Polychaeta
•
Many setae
•
Parapodia
13
14
Class Polychaeta
Head
Parapodium
Tentacle