Perognathus formosus (rodent)
Mass: 18.5 g based on Kenagy and Bartholomew 1985, Lawler and Geluso 1986 and Morton et al. 1980
Found in one sample
United States: Crystal Ball Cave (Late Pleistocene)
Size measurements:
| ♀ body mass | 18.1 g | N = 118 | Kenagy and Bartholomew 1985 |
| ♂ body mass | 19.1 g | N = 97 | Kenagy and Bartholomew 1985 |
| body mass | 17.9 g | N = 6 | Lawler and Geluso 1986 |
| body mass | 18.6 g | N = 3 | Morton et al. 1980 |
See also Perognathus, Perognathus amplus, Perognathus ancenensis, Perognathus carpenteri, Perognathus flavescens, Perognathus flavus, Perognathus gidleyi, Perognathus hispidus, Perognathus huastecensis, Perognathus longimembris, Perognathus merriami, Perognathus minutus, Perognathus parvus, Perognathus pearlettensis, Perognathus rexroadensis, Perognathus sp.