The University Museum
The University of Tokyo

Bulletin No.38

COMPARATIVE ANATOMY AND PHYLOGENY OF THE RECENT ARCHAEOGASTROPODA (MOLLUSCA: GASTROPODA)

Takenori SASAKI

1998 TOKYO

CONTENTS

I. Introduction

II. Material and Methods

III. Descriptions

IV. Phylogenetic Analysis

IV-1. Character States

	1. External Characters
	2. Pallial Complex
	3. Alimentary System
	4. Circulatory System
	5. Excretory System
	6. Reproductive System
	7. Nervous System

IV-2. Cladistic Analysis

V. Discussion

V-1. Relationships of Major Archaeogastropod Subgroups

V-2. Evolution of Anatomical Characters

	1. Symmetry of Pallial Organs
	2. Respiratory Organs
	3. uccal Mass
	4. adula
	5. Alimentary Tract and Glands
	6. Reproductive System
	7. Nervous System

V-3. Phylogenetic Evaluation of Protoconch Characters

	1. Phylogenetic Characters of Protoconch
	2. Correlations with Reproductive Biology
	3. Evolution of Protoconch Characters

VI. Conclusions

VII. Acknowledgments

VIII. References

Takenori SASAKI: Geological Institute, University of Tokyo