Nanoastegotherium fossil map
Where fossils of Nanoastegotherium have been found, shown on the Earth as it looked about 15 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 15 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 | 13.8–11 million years ago (Serravallian to Tortonian) |
| Periods | Neogene |
| Family | Dasypodidae |
| Named by | Carlini et al. 1997 |
| Fossil records | 6 occurrences at 3 locations (PBDB) |
| Found in | Colombia |
| Rock formations | Villavieja, La Victoria |
About Nanoastegotherium
Nanoastegotherium is an extinct genus of cingulate, belonging to the family Dasypodidae, which includes the modern nine-banded armadillos. The name of the genus means "small Astegotherium", referring to its small size, smaller than the modern southern long-nosed armadillo, and to its affinities with Astegotherium, with which it forms the tribe Astegotheriini, within the family Dasypodidae. Its type species is Nanoastegotherium prostatum, whose species translates to "earlier" due to its age compared to Astegotherium.
Remains of this species comes from La Venta, a location of La Victoria Formation, from central Colombia, dated from the Middle Miocene. Its remains, discovered among the coprolites of crocodiles, consist of the osteoderms of its back and of a caudal tube. These osteoderms were characterized by their rectangular shape with large perforations on their surface, each osteoderms measuring between 4 and 7 millimeters long and 3 to 4.5 millimeters wide. Nanoastegotherium was apparently closely related with Pseudostegotherium.
Text in “About” is quoted from the Wikipedia article Nanoastegotherium (revision 1380882963), 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: Q6037824.
