🦕 Prehistoric World Map

Deltatheroides fossil map

Where fossils of Deltatheroides have been found, shown on the Earth as it looked about 75 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 75 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
Lived83.6–66 million years ago (Campanian to Maastrichtian)
PeriodsCretaceous
Named byGregory and Simpson 1926
Fossil records4 occurrences at 2 locations (PBDB)
Found inUnited States, Mongolia
Rock formationsLance, Djadokhta

About Deltatheroides

Deltatheroides is an extinct genus of Deltatheridiidae from Cretaceous of Mongolia. Another specimen found in Wyoming is suspected to belong to this genus.

Text in “About” is quoted from the Wikipedia article Deltatheroides (revision 1377222144), 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: Q5254833.

More early mammals