Liomys fossil map
Where fossils of Liomys have been found, shown on the Earth as it looked about 5 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 5 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →
| Group | Early mammals |
|---|---|
| Lived | 4.7–0.0117 million years ago (Zanclean to Late Pleistocene) |
| Periods | Neogene, Quaternary |
| Family | Heteromyidae |
| Named by | Merriam 1892 |
| Fossil records | 18 occurrences at 8 locations (PBDB) |
| Found in | United States, Mexico |
| Rock formations | txn:41673, Rexroad, Blanco |
About Liomys
Heteromys is a genus of rodents in the family Heteromyidae, commonly known as spiny pocket mice. It is the only extant genus in the subfamily Heteromyinae which also includes the extinct genera Diprionomys and Metaliomys. Heteromys was recently enlarged by inclusion of the members of formerly recognized heteromyine genus Liomys, which was found to be paraphyletic.
Text in “About” is quoted from the Wikipedia article Heteromys (revision 1366528753), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q1035905.
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