HEMICHORDATA (ACORN WORMS
AND PTEROBRANCHS)
 Introduction
to the Hemichordata. Museum of Paleontology, University of California.
An excellent introduction to the Hemichordata.
Marine
Biology Laboratory Specimen Database. Photograph of the Acorn Worm
Sarcoglossus kowalevskii from the Woods Hole region of Massachusetts.
PROTOCHORDATA (UROCHORDATA AND CEPHALOCHORDATA)
General
Protochordata.
David Cannatella. A technical introduction to the Protochordates.
Urochordata (Sea Squirts,
Tunicates, Ascidians)
Introduction
to the Urochordata. Museum of Paleontology, University of California.
An introduction to the Urochordata.
Sea
Squirts. K. Amaral. A very good, non-technical introduction to the
Urochordata.
Keys
to Marine Invertebrates of the Woods Hole Region. Marine Biology Laboratory.
This site has keys and a general introduction to the ascidians, sea squirts,
and tunicates of the Woods Hole region of Massachusetts. It also has a
list of references and checklist of the species of the region.
British
Columbia Creature Page. Kerry Werry. This excellent site has photographs
and information on several species of Urochordata from the coastal region
of British Columbia.
Marine
Biology Laboratory Specimen Database. Photographs of tunicates and
other members of the Urochordata found in the Woods Hole region of Massachusetts.
Ascidian
Home Page for the United States. C. and G. Lambert. An archive for
a newsletter called "Ascidian News".
Cephalochordata (Amphioxus)
Introduction
to the Cephalochordata. Museum of Paleontology, University of California.
An excellent introduction to the Cephalochordata. |
