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Gulf of Mexico US coast, Florida to Texas
littoral areas along Gulf Coast
latitude: 27
longitude: -90
Precision of location: Gauged from atlas
Site Named Here: By name of sea, gulf, or country named in source publication
| Stylochus frontalis | pre 1954 | |||
| Stylochus ellipticus | pre 1954 | |||
| Hoploplana inquilina | pre 1954 | |||
| Gnesioceros floridana | pre 1954 | |||
| Gnesioceros sargassicola | pre 1954 | on floating Sargassum | ||
| Hoploplana grubei | on floating Sargassum | |||
| Paravortex gemellipara | 1980 or earlier | collected from Host-Geukensia demissa, intestine and stomach; |