Anisolophus fossil map
Where fossils of Anisolophus 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 | 20.45–13.82 million years ago (Burdigalian to Langhian) |
| Periods | Neogene |
| Family | Proterotheriidae |
| Named by | Burmeister 1885 |
| Fossil records | 8 occurrences at 4 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Santa Cruz, Cerro Boleadoras |
About Anisolophus
Anisolophus is an extinct genus of proterotheriid from the Early to Middle Miocene of Argentina. The genus was named by Burmeister in 1885 to accommodate the species Anchitherium australe, which they had named earlier in 1879. Soria then referred the species Licaphrium floweri and Anisolophus minisculus to the genus, making Licaphrium, named in 1887 by Florentino Ameghino, a junior synonym of the genus. Both A. australis and A. floweri are known from the Santacrucian age Santa Cruz Formation, while A. minisculus is known from the Collón Curá Formation.
Anisolophus is considered the senior synonym of the genus Licaphrium, which was named in 1887 by Ameghino for the species L. floweri, now A. floweri. Many other species of Licaphrium were named, many of which are considered synonyms of A. floweri, Tetramerorhinus, Neobrachytherium, or Lophogonodon, as well as the dubious Licaphrium debile, L. arenarum, L. intermissum, L. parvulum. Two invalid species of Anisolophus are known, A. fischeri, and A. acer, which are both dubious and also known as Diaphragmodon fischeri or Heptaconus acer.
Text in “About” is quoted from the Wikipedia article Anisolophus (revision 1347619689), 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: Q111838955.
