| Pomerado Conglomerate(expression, geology, unit, paleontology) |
| Poway Formation(expression, geology, unit, paleontology) |
| San Emigdio Formation(expression, geology, unit, paleontology) |
| San Francisquito Formation(expression, geology, unit, paleontology) |
| Santa Barbara Island(expression, geology, unit, paleontology) |
| Santa Susana Formation(expression, geology, unit, paleontology) |
| Santiago Formation(expression, geology, unit, paleontology) |
| Scripps Formation(expression, geology, unit, paleontology) |
| Sespe Formation(expression, geology, unit, paleontology) |
| Sierra Blanca Limestone(expression, geology, unit, paleontology) |
| Silverado Formation(expression, geology, unit, paleontology) |
| Stadium Conglomerate(expression, geology, unit, paleontology) |
| Sutil Island(expression, geology, unit, paleontology) |
| Sweetwater Formation(expression, geology, unit, paleontology) |
| Tejon Formation(expression, geology, unit, paleontology) |
| Temblor Formation(expression, geology, unit, paleontology) |
| Titus Canyon Formation(expression, geology, unit, paleontology) |
| Vaqueros Formation(expression, geology, unit, paleontology) |
| Vedder Sand(expression, geology, unit, paleontology) |