larval_type                     abbreviation  
Actinotroch                     AC            
Amphioxus                       AX            
Anthozoan larva                 AN            
Asteroid Juvenile               AJ            
Auricularia                     AU            
Bipinnaria                      BI            
Bivalve veliger                 BV            
Brachiolaria                    BR            
Brachiopods                     BC            
Chaetopterid                    CH            
Cyprid                          CP            
Chaetognath                     CT            
Cyphonautes                     CY            
Doliolaria                      DO            
Echinopluteus                   EC            
Entoprocts                      EN            
Egg                             EG            
Gastropod veliger               GV            
Glottidia                       GL            
Gymnosome larva                 GY            
Megalopa                        MG            
Mitraria                        MI            
Mullers                         MU            
Nectochaete                     NE            
Pelagosphaera                   PE            
Pentacula                       PN            
Pilidium                        PI            
Planulae                        PL            
Planuliform                     PA            
Planuliform palaeonemertean     PP            
Pteropod shell                  PT            
Ophiopluteus                    OP            
Ophiuroid juvenile              OJ            
Sponge larva                    SL            
Tadpole                         TA            
Trochophore                     TR            
Tornaria                        TO            
Unknown                         UK            
Zoanthid                        ZO            
Zoea                            Z