General Introduction

A manual for identification of the more common marine invertebrates, compiled by Ralph T. Smith with the assistance of many contributors.

Please note: August 2000 - The current key-producing application is being revised for our new server. Please see Key 3 (Cnidaria) for a sample chapter.

These Keys, produced in 1964, are presented both as a model for development of on-line dichotomous keys and as a call for qualified persons to update them.

1. PORIFERA
2. CNIDARIA, Class Hydrozoa
3. CNIDARIA, Class Scyphozoa
   (revised April 1999)
4. CNIDARIA, Class Anthozoa
5. CTENOPHORA
6. PLATYHELMINTHES
7. NEMERTEA (RHYCHOCOELA)
8. OTHER UNSEGMENTED WORMS:
9. ANNELIDA
10. ARTHROPODA, Subphylum Chelicerata
11. ARTHROPODA, Lower Crustacea and Cirripedia
12. ARTHROPODA, Pericaridan Crustaceans
13. ARTHROPODA, Decapod and Stomatopod Crustaceans
14. MOLLUSCA, Introduction
15. MOLLUSCA, Shell-less Opistobranchs
16. ENTOPROCTA
17. ECTOPROCTA
18. ECHINODERMATA
19. PROTOCHORDATES

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