🦕 Prehistoric World Map

Isocetus fossil map

Where fossils of Isocetus 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
Lived15.98–7.246 million years ago (Langhian to Tortonian)
PeriodsNeogene
Named byVan Beneden 1880
Fossil records8 occurrences at 4 locations (PBDB)
Found inBelgium, Denmark, Netherlands
Rock formationsBerchem, Gram, Groote Heide

About Isocetus

Isocetus is an extinct genus of baleen whale belonging to the clade Thalassotherii. Remains have been found in middle Miocene marine deposits in Belgium.

Text in “About” is quoted from the Wikipedia article Isocetus (revision 1255782850), 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: Q48970194.

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