Gyldenstolpia fronto
CR

Gyldenstolpia fronto

Unknown

Photo: (c) Lucasdod61, some rights reserved (CC BY-SA)

Overview

The fossorial giant rat is a species of rodent in the family Cricetidae. It is found in Argentina and Brazil but was determined extinct following a recent assessment of the conservation status of sigmodontine rodents. Its natural habitat is assumed to be dry savanna, but there have been no ecological details reported.

Gyldenstolpia fronto faces severe population decline due to extensive deforestation and agricultural conversion throughout its limited range in the Atlantic Forest of southeastern Brazil. Mining activities and urban expansion have further fragmented the remaining forest patches, isolating small populations and reducing genetic diversity. The species' specialized habitat requirements and apparent low reproductive rate make recovery particularly challenging even in protected areas.

Threat summary

Habitat

This species inhabits primary and secondary Atlantic Forest (Mata Atlântica) in southeastern Brazil, typically found in humid montane forests between 800-1,500 meters elevation. It appears to require dense canopy cover and may be associated with specific microhabitat conditions within the forest understory.

Wetlands (inland)· major

Frequently asked questions

Why is Gyldenstolpia fronto classified as Critically Endangered?
Gyldenstolpia fronto is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Gyldenstolpia fronto faces severe population decline due to extensive deforestation and agricultural conversion throughout its limited range in the Atlantic Forest of southeastern Brazil. Mining activities and urban expansion have further fragmented the remaining forest patches, isolating small populations and reducing genetic diversity. The species' specialized habitat requirements and apparent low reproductive rate make recovery particularly challenging even in protected areas.
Where does Gyldenstolpia fronto live?
Gyldenstolpia fronto occurs in Argentina. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Gyldenstolpia fronto?
The main threats to Gyldenstolpia fronto are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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