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Dinosgacha

Mammal

Josephoartigasia

Josephoartigasia monesi was a giant rodent with a substantial skull and large incisors.

Josephoartigasia monesi was a giant rodent with a substantial skull and large incisors. It belonged to a South American rodent lineage, not to the beavers.

Josephoartigasia at a glance

Diet
Herbivore
Its feeding anatomy is interpreted as adapted to plant food.
When it lived
Pliocene–Pleistocene
Group
Dinomyidae
Dinomyids

Beyond the game

The real Josephoartigasia

Josephoartigasia monesi was a giant rodent with a substantial skull and large incisors. It belonged to a South American rodent lineage, not to the beavers.

The substantial skull and incisors are more directly documented than its complete body. Estimates of body size depend on models and comparisons with other rodents.

Fossil discoveries

San Jose, Uruguay · approximate location
San Jose, Uruguay

Selected fossil records · present-day map

Map references

Paleobiology Database · A. Rinderknecht and R. E. Blanco. 2008. The largest fossil rodent. Proceedings of The Royal Society B 275:923-928 ↗

Map: Natural Earth, public domain. Fossil records: Paleobiology Database and linked collections and publications.

Sources & text credits

Explore the references behind this profile.

  1. Rinderknecht and Blanco 2008 — The largest fossil rodent
  2. Millien 2008 — The largest among the smallest: the body mass of the giant rodent Josephoartigasia monesi

Original English Dinosgacha educational summaries informed by the linked scientific and museum references; source publications retain their own rights.

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