Lambdaconus fossil map
Where fossils of Lambdaconus have been found, shown on the Earth as it looked about 30 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 30 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 | 56–15.98 million years ago (Ypresian to Burdigalian) |
| Periods | Paleogene, Neogene |
| Family | Proterotheriidae |
| Named by | Ameghino 1897 |
| Fossil records | 6 occurrences at 3 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Pinturas, txn:43468, Agua de la Piedra |
About Lambdaconus
Lambdaconus is a genus of proterotheriid from the Late Oligocene to Early Miocene of Argentina. The type species (main species) of Lambdaconus genus is L. suinus. It was named in 1897 by Ameghino. The referred species include L. lacerum, named as Proterotherium lacerum in 1902 by Ameghino, and L. inaqeuifacies.
Text in “About” is quoted from the Wikipedia article Lambdaconus (revision 1311771571), 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: Q111838995.
