Miomancalla fossil map
Where fossils of Miomancalla 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 | Prehistoric birds |
|---|---|
| Lived | 11.63–5.333 million years ago (Tortonian to Messinian) |
| Periods | Neogene |
| Family | Alcidae |
| Named by | Smith 2011 |
| Fossil records | 4 occurrences at 4 locations (PBDB) |
| Found in | United States |
| Rock formations | San Mateo, Monterey, Capistrano |
About Miomancalla
Miomancalla is an extinct genus of prehistoric flightless alcids that lived on the Pacific coast of today's California in the Miocene epoch. It contained two species, M. howardi and M. wetmorei. M. howardi, was the largest charadriiform of all time, with an estimated body mass of 5.4 kg.
Text in “About” is quoted from the Wikipedia article Miomancalla (revision 1358355597), 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: Q106716100.
