🦕 Prehistoric World Map

Hydromys fossil map

Where fossils of Hydromys have been found, shown on the Earth as it looked about 0 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 0 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 →

Hydromys
Image: ZooPro, CC BY-SA 3.0, via Wikimedia Commons
GroupEarly mammals
Lived2.58 million years ago to the present (Gelasian to Holocene)
PeriodsQuaternary
FamilyMuridae
Named byGeoffroy 1804
Fossil records18 occurrences at 8 locations (PBDB)
Found inAustralia
Rock formationstxn:41892

About Hydromys

Hydromys is a genus of semiaquatic rodents in the subfamily Murinae. Three species are endemic to New Guinea and nearby islands. The fourth species, the rakali, is also found on Australia. The most recently discovered member of this genus was described in 2005.

Text in “About” is quoted from the Wikipedia article Hydromys (revision 1271004144), 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: Q668884.

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