| Peraiocynodon Temporal range: Middle Jurassic,
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Synapsida |
| Clade: | Therapsida |
| Clade: | Cynodontia |
| Clade: | Mammaliaformes |
| Order: | †Docodonta |
| Family: | †Docodontidae |
| Genus: | †Peraiocynodon Simpson, 1929 |
| Type species | |
| †Peraiocynodon inexpectatus Simpson, 1929
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| Species | |
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Peraiocynodon is an extinct mammaliaform from the order Docodonta, found in the Middle Jurassic rocks of the United Kingdom. It is only known from isolated molar teeth found in the mammal bed at Kirtlington cement quarry in Oxfordshire, England (Forest Marble Formation).
Peraiocynodon was originally erected in 1929 with a single species named,[1] but it was later considered to be a synonym of Docodon.[2] However, in 2003, the genus was resurrected and a new species, P. major, was described based on new teeth found at Kirtington Cement Quarry in Oxfordshire.[3] It remains uncertain whether one or both of these species of Peraiocynodon may be the deciduous teeth of another genus of docodontan, or whether they truly are separate species.
References[edit]
- ^ Simpson GG. 1928. A Catalogue of the Mesozoic Mammalia in the Geological Department of the British Museum. British Museum.
- ^ Butler PM. 1939. The teeth of the Jurassic mammals. In Proceedings of the Zoological Society of London, 109:329-356). Oxford, UK: Blackwell Publishing Ltd.
- ^ Sigogneau-Russell D. 2003. Docodonts from the British Mesozoic. Acta Palaeontologica Polonica, 48(3)
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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