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The insular cave rat (Heteropsomys insulans) is an extinct species of spiny rat that was native to Puerto Rico.[2] Known only from recent fossil deposits, it most likely persisted until European colonization of Puerto Rico began.
| Insular cave rat Temporal range: Holocene
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|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Echimyidae |
| Genus: | †Heteropsomys |
| Species: | †H. insulans
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| Binomial name | |
| †Heteropsomys insulans Anthony, 1916
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Species and description
editSpiny rats are a group of hystricognath rodents in the family Echimyidae. They are distributed from Central America through much of South America. They were also found in the West Indies until the 1800s. Most species have stiff pointed hairs, or a bristly coat of flat flexible spines that allow for protection. Many echimyids can break off their tails when attacked. This action confuses predators long enough for the animal to escape. Unlike lizards, however, the tail of spiny rats does not regenerate. This technique can obviously be used only once in each individual's lifetime. This species most likely did not do well in conditions of high heat and aridity and are restricted to regions with an abundant source of water.
Diet
editThese rats were almost exclusively herbivorous. Their diet most likely included fruits, nuts, grass, and sugar cane.
References
edit
- ^ Turvey, S. & Helgen, K. (2016). "Heteropsomys insulans". IUCN Red List of Threatened Species. 2016: e.T10025A22205961. doi:10.2305/IUCN.UK.2016-2.RLTS.T10025A22205961.en. Retrieved 13 November 2021.
- ^ "Heteropsomys insulans Anthony, 1916". ASM Mammal Diversity Database. American Society of Mammalogists. Retrieved 9 September 2022.
- Turvey, S.T.; Oliver, J.R.; Storde, Y.M. Narganes; Rye, P (2007). "Late Holocene extinction of Puerto Rican native land mammals". Biology Letters. 3 (2): 193–196. doi:10.1098/rsbl.2006.0585. PMC 2375922. PMID 17251123.
- "Taxon profile: Insular Cave Rat". Retrieved 2012-06-15.
- "New fossil rodents from Porto Rico; with additional notes on Elasmodontomys obliquus Anthony and Heteropsomys insulans Anthony". Bulletin of the American Museum of Natural History. 37. hdl:2246/1335.
- "Heteropsomys insulans : insular cave rat : classification". Retrieved 2012-06-15.
- "American spiny rat". Britannica. Retrieved 2012-06-15.