| Odobenidae Temporal range: Middle Miocene to present
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Carnivora |
| Clade: | Pinnipedia |
| Superfamily: | Otarioidea |
| Family: | Odobenidae Allen, 1880 |
| Genera | |
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Odobenus (walrus) | |
Odobenidae is a family of pinnipeds, of which the only extant species is the walrus (Odobenus rosmarus). In the past, however, the group was much more diverse, and includes more than a dozen fossil genera.
Taxonomy
[edit]All genera, except Odobenus, are extinct.[1]
- †Archaeodobenus
- †Prototaria
- †Proneotherium
- †Nanodobenus
- †Neotherium
- †Imagotaria
- †Kamtschatarctos
- †Pelagiarctos
- †Pontolis
- †Pseudotaria
- †Titanotaria
- Clade Neodobenia[2]
- †Gomphotaria
- Subfamily Dusignathinae
- Subfamily Odobeninae
In re-analyzing Pelagiarctos, Boessenecker et al. (2013) proposed the phylogenetic relationships of Odobenidae as follows (this analysis excluded Archaeodobenus, Titanotaria, Nanodobenus, and Pliopedia; and included Enaliarctos, Pteronarctos, Allodesmus, Desmatophoca, Callorhinus, Monachus, and Erignathus):[3]
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References
[edit]- ^ Berta A, Sumich J, Kovacs K (December 2005). Marine Mammals: Evolutionary Biology (2nd ed.). Elsevier/Academic Press. ISBN 978-0-08-048934-6.
- ^ Magallanes I, Parham JF, Santos GP, Velez-Juarbe J (2018). "A new tuskless walrus from the Miocene of Orange County, California, with comments on the diversity and taxonomy of odobenids". PeerJ. 6: e5708. doi:10.7717/peerj.5708. PMC 6188011. PMID 30345169.
- ^ Boessenecker RW, Churchill M (2013-01-16). "A reevaluation of the morphology, paleoecology, and phylogenetic relationships of the enigmatic walrus Pelagiarctos". PLOS ONE. 8 (1): e54311. Bibcode:2013PLoSO...854311B. doi:10.1371/journal.pone.0054311. PMC 3546998. PMID 23342129.
Further reading
[edit]- Jouventin P, Cornet A (1981-01-29). "The Sociobiology of Pinnipeds". In Rosenblatt JS, Hinde RA, Beer C, Busnell MC (eds.). Advances in the Study of Behavior. Vol. 11. Academy Press. p. 122. ISBN 0-12-004511-7.
| Authority control databases: National |
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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