🦕 Prehistoric World Map

Phocageneus fossil map

Where fossils of Phocageneus 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 →

GroupEarly mammals
Lived20.45–11.63 million years ago (Burdigalian to Serravallian)
PeriodsNeogene
FamilySqualodelphinidae
Named byLeidy 1869
Fossil records6 occurrences at 3 locations (PBDB)
Found inUnited States
Rock formationsCalvert

About Phocageneus

Phocageneus is an extinct genus of river dolphin belonging to Squalodelphinidae. Specimens have been found in the middle Miocene Calvert Formation of Maryland and Virginia.

Text in “About” is quoted from the Wikipedia article Phocageneus (revision 1258135309), 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: Q49001330.

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