Gatun Formation (Lower)
Arcida
Lunarca ovalis
Gastropoda incertae sedis
Architectonica nobilis
Littorinimorpha
Calyptraea centralis
Crepidula plana
Crucibulum chipolanum
Cyclostremiscus pentagonus
Petaloconchus floridanus
Petaloconchus sculpturatus
Ostreida
Hyotissa haitensis
Pectinida
Anomia simplex
Trochida
Turbo castanea
Venerida
Mulinia lateralis