| Abbrev | Name | Spec | Type | Locality |
|---|---|---|---|---|
| MLC | MALCOLM[1281]; | TR.AE | USA | |
| MALO5 | MALIANI-058-5-10[1281]; | TR.AE | ITA | |
| MALO8 | MALIANI-08[1281]; | TR.AE | ITA | |
| MAL11 | MALIANI-11[1281]; | TR.AE | ITA | |
| MALD | MALLARD,MEX[1281]; | TR.DR | S | MEX |
| MLRD | MALLARD[1281]; | TR.AE | USA | |
| MALMUK | MALLEMUK[1281]; | TR.DR | S | MEX |
| MLW | MALWA[1281]; | TR.AE | POL | |
| MAB | MAMMOTH-AMBER[1281]; | TR.AE | USA | |
| MR | MAMMOTH-RED[1112][1281]; | TR.AE | W | USA |
| MND | MANDON[1281]; | TR.AE | FRA | |
| MNLD | MANELLA-DEPREZ[1281]; | TR.AE | FRA | |
| MGLA | MANGALA[1281][1324]; | TR.AE | S | IND |
| MGL | MANGLA-68[1281]; | TR.AE | S | PAK |
| MITUIS | MANITOU-INSENSITIVE[1281]; | TR.AE | CAN | |
| MITUTH | MANITOU-TYPE-THATCHER[1281]; | TR.AE | CAN | |
| MITU | MANITOU[1281]; | TR.AE | CAN | |
| MNG | MANNING[1281]; | TR.AE | USA | |
| MANO | MANTARO[1281]; | TR.AE | ||
| MAQI | MAQUI-INIA[1281]; | TR.AE | S | CHL |