Taxon
- Macoma nasuta21 objects
- Macoma secta10 objects
- Macropodidae3 objects
- Madoqua1 objects
- Magallana gigas1 objects
- Malvaceae1 objects
- Mammalia170 objects
- Mammalia—refined identification pending296 objects
- Mammut (extinct)1 objects
- Mammuthus27 objects
- Mammutidae (extinct)1 objects
- Margaritifera4 objects
- Margaritifera margaritifera8 objects
- Maristilla CHECK1 objects
- Marmota10 objects
- Marmota caligata1 objects
- Marmota flaviventris7 objects
- Marmota monax2 objects
- Martynia14 objects
- Martynia annua1 objects