| Collection excludes: | some genera |
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | MLP |
| Collection method comments: Museo de La Plata collection |
| Taxonomic list comments: undescribed mammals, fishes, invertebrates, and plants also are present; the mammals at least are from tuffs concordantly underlying the diatomite |
