| Order | Type | Group | Form-ati | Member | Description | Upper | Lower | Basin |
| By No. | on | Age | Age |
| 2926.0 | SED | CM | KEF | Keele Formation | CD | WOR |
| 2927.0 | ETM | Etruria Marl Formation | CP |
| 2928.0 | BLAB | Blackband Formation | SPE |
| 2929.0 | GRCF | Great Row Coal Formation | WOR |
| 2930.0 | CBIF | Clayband Ironstone Formation |
| 2931.0 | PRM | Productive Measures | CW |
| 2932.0 | UCMS | Upper Coal Measures | SONS |
| 2933.0 | UCLV | Upper Cleaver Member |
| 2934.0 | LCLV | Lower Cleaver Member |
| 2935.0 | ERB | Erbistock Beds | CD | WEL |
| 2936.0 | CYAF | Coed-Yr-Allt Beds |
| 2937.0 | SPBL | Spirorbis Limestone |
| 2938.0 | CPF | Coalport Formation | CP | CD | CHE |
| 2939.0 | RML | Ruabon Marl | WEL |
| 2940.0 | CNFR | Cefn Rock |
| 2941.0 | CFE | Cefn Rock Equivalent |
| 2942.0 | SMS | Smiths Sandstone |
| 2943.0 | TRK | Two Yard/Crank Sandstone |
| 2944.0 | MRK | Main Rock |
| 2945.0 | CSS | Crown Sandstone |
| 2946.0 | LLMB | Llay Marine Band |
| 2947.0 | CMDH | H H Sandstone | SPEN EMSH |
| 2948.0 | CMDG | G G Sandstone |
| 2949.0 | CMDF | F F Sandstone | PU | EMSH |
| 2950.0 | HIGH | High Main Coal | CP | SPE |
| 2951.0 | WALE | Wales Coal |
| 2952.0 | GLAN | Glandford Rock | SPEN EMSH |
| 2953.0 | GHR | Glass Houghton Rock | EMSH |
| 2954.0 | ACR | Acton Rock |
| 2955.0 | SCOF | Scofton Rock Lower Leaf |
| 2956.0 | SHAF | Shafton Rock |
| 2957.0 | UCLG | Upper Coal Measures | SPEN EMSH |
| 2958.0 | WICK | Wickersley Sandstone | EMSH |
| 2959.0 | ACKS | Ackworth Sandstone |
| 2960.0 | ACKU | Ackworth Rock Upper Leaf |
| 2961.0 | ACKL | Ackworth Rock Lower Leaf |
| 2962.0 | ACKE | Ackworth Rock Equivalent | SPE |
| 2963.0 | CAMB | Cambriense Marine Band | GAI |
| 2964.0 | SHMB | Shafton Marine Band |
| 2965.0 | MXRU | Mexborough Rock Upper Leaf | EMSH |
| 2966.0 | MXRL | Mexborough Rock Lower Leaf |
| 2967.0 | MXR | Mexborough Rock |
| 2968.0 | RVR | Ravenfield Sandstone | SPE |
| 2969.0 | MAMB | Mansfield Marine Band |
| 2970.0 | AGMB | Aegiranum Marine Band | SPEN EMSH |
| 2971.0 | CMMI | Middle Coal Measures Formation | CW | SONS |
| 2972.0 | WEBS | Westphalian B Sand | CB |
| 2973.0 | COOR | Coombes Rock | SPEN EMSH |
| 2974.0 | KENR | Kents Thick Rock |
| 2975.0 | HHRO | High Hazles Rock |
| 2976.0 | HGRO | Haigh Moor Rock |
| 2977.0 | BRAR | Brinsley-Abdy Rock | CP | EMSH |
| 2978.0 | ABR | Abdy Rock | CB |
| 2979.0 | BRIN | Brinsley Rock |
| 2980.0 | TFR | Two Foot Sandstone |
| 2981.0 | THRK | Top Hard Rock |
| 2982.0 | HARD |
| 2983.0 | BRNS | Barnsley Coal |
| 2984.0 | EAGL | Eagle Sandstone |
| 2985.0 | SEAG | Sub Eagle Sandstone | SPE |
| 2986.0 | ROBN | Robin Sandstone |
| 2987.0 | URBN | Upper Robin Sandstone |
| 2988.0 | LRBN | Lower Robin Sandstone |
| Page 48 of 60 | 07/07/2004 |