Lambdoceras fossil map
Where fossils of Lambdoceras 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 | 23.04–5.333 million years ago (Aquitanian to Messinian) |
| Periods | Neogene |
| Family | Protoceratidae |
| Named by | Stirton 1967 |
| Fossil records | 20 occurrences at 5 locations (PBDB) |
| Found in | United States |
| Rock formations | Olcott, txn:42572, Batesland, Sheep Creek, Fleming |
About Lambdoceras
Lambdoceras is an extinct genus of Protoceratidae belonging to the order Artiodactyla (subfamily Synthetoceratinae) endemic to North America during the Miocene, living epoch 20.6—13.6 Ma, existing for approximately 7 million years.
Text in “About” is quoted from the Wikipedia article Lambdoceras (revision 1258218640), 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: Q6481181.
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