| Gnathostomula axi Kirsteuer, 1964 | Jul-Aug 1967 | 0.2 m | sand mixed with detritus and filiform algae | Station 1: Lagoon coast of N. Bimini, immediately in front of Lerner Marine Lab |
| Mesognatharia bahamensis Kirsteuer, 1969a | Jul-Aug 1967 | 0.2 m | sand mixed with detritus and filiform algae | Station 1: Lagoon coast of N. Bimini, immediately in front of Lerner Marine Lab |
| Pterognathia grandis Kirsteuer, 1969a | Jul-Aug 1967 | 0.2 m | sand mixed with detritus and filiform algae | Station 1: Lagoon coast of N. Bimini, immediately in front of Lerner Marine Lab |
| Gnathostomula peregrina Kirsteuer, 1969a | Jul-Aug 1967 | 0.5 m | detritus mixed with sand between Thalassia | Station 2: northeastern corner of outer lagoon, near entrance to Bonefish Creek |
| Austrognathia sterreri Kirsteuer, 1969a | Jul-Aug 1967 | 0.5 m | sand mixed with detritus and decomposing mangrove leaves | Station 3: midway in Bonefish Creek on East Bimini |
| Gnathostomula peregrina Kirsteuer, 1969a | Jul-Aug 1967 | 0.5 m | sand mixed with detritus and decomposing mangrove leaves | Station 3: midway in Bonefish Creek on East Bimini |
| Mesognatharia bahamensis Kirsteuer, 1969a | Jul-Aug 1967 | 0.5 m | sand mixed with detritus and decomposing mangrove leaves | Station 3: midway in Bonefish Creek on East Bimini |
| Austrognathia sterreri Kirsteuer, 1969a | Jul-Aug 1967 | 0.5 m | detritus mixed with sand between Thalassia | Station 2: northeastern corner of outer lagoon, near entrance to Bonefish Creek |