| Megalomys Temporal range: Middle Pleistocene - Holocene
| |
|---|---|
| |
| Martinique giant rice rat (Megalomys desmarestii) | |
| |
| Saint Lucia giant rice rat (Megalomys luciae) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Subfamily: | Sigmodontinae |
| Tribe: | Oryzomyini |
| Genus: | †Megalomys Trouessart, 1881 |
| Species | |
|
†Megalomys audreyae | |
Megalomys is a genus of rodent in the family Cricetidae, part of the tribe Oryzomyini. The genus contains five large rodents from various Caribbean islands, of which two are known to have survived into modern times, but all of which are now extinct. The last species to survive was M. desmarestii from Martinique, which became extinct after the Mount Pelée eruption in 1902. Ancient DNA analysis places Megalomys forming a clade with Pennatomys, sister to the clade containing Aegialomys, Nesoryzomys, Melanomys and Sigmodontomys, having diverged from the mainland clade around 7 million years ago.[1]
It contains the following species:
Recently extinct species:
- Megalomys desmarestii (Martinique giant rice rat)
- Megalomys luciae (Saint Lucia giant rice rat)
Fossil species:
- Megalomys audreyae (Barbuda giant rice rat)
- Megalomys curazensis (Curaçao giant rice rat)
- Megalomys georginae (Barbados giant rice rat)
References
[edit]- ^ Brace, Selina; Turvey, Samuel T.; Weksler, Marcelo; Hoogland, Menno L. P.; Barnes, Ian (2015-05-22). "Unexpected evolutionary diversity in a recently extinct Caribbean mammal radiation". Proceedings of the Royal Society B: Biological Sciences. 282 (1807): 20142371. doi:10.1098/rspb.2014.2371. ISSN 0962-8452. PMC 4424637. PMID 25904660.
- Extinct species section of the Joint Science department, Claremont college
- Turvey, S.T., Brace, S. and Weksler, M. A new species of recently extinct rice rat (Megalomys) from Barbados. Mammalian Biology - Zeitschrift für Säugetierkunde 77(6): 404–413.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction