Nectridea is the name of an extinct order of lepospondyl tetrapods from the Carboniferous and Permian periods, including animals such as Diplocaulus. In appearance, they would have resembled modern newts or aquatic salamanders, although they are not amphibians.[1][2] They had long, flattened tails to aid in swimming, and well-developed hind limbs, with a full set of five toes each. Their forelimbs were somewhat reduced, however, and like modern amphibians, typically had only four toes each.[3]
| Nectrideans Temporal range:
| |
|---|---|
| |
| Life restoration of Diplocaulus. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Sarcopterygii |
| Clade: | Tetrapodomorpha |
| Clade: | Stegocephali |
| Order: | †Nectridea Miall, 1875 |
| Subgroups | |
Taxonomy
- Order Nectridea
References
- ^ Laurin, Michael. "Phylogeny of Stegocephalians". Tree of Life. Tree of Life Web Project. Retrieved 1 February 2017.
- ^ "Palaeos: Vertebrates: Lepospondyli: Overview". Palaeos. Retrieved 1 February 2017.
- ^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 54. ISBN 1-84028-152-9.
- Ahlberg, P. E. & Milner, A. R. 1994: The origin and early diversification of tetrapods. Nature: vol. 368, 7 April, pp. 507–514
- Anderson, J. S. 1998: Phylogenetic analysis of the Lepospondyli (Tetrapoda). Journal of Vertebrate Paleontology. Vol. 18, #3, Suppl. to #3, pp. 24A
- Carroll, R. L., 1988: Vertebrate paleontology and evolution. W. H. Freeman and company, New York, 1988, 698.
- Carroll, R. L., 1988: Appendix. 594-648. in Carroll, R. L., 1988: Vertebrate paleontology and evolution. W. H. Freeman and company, New York, 1988, 698.
- Carroll, R. L. 1996: Revealing the patterns of macroevolution. Nature: vol. 381, 2 May, pp. 19–20
- Clack, J. A., 1998: A new Early Carboniferous tetrapod with a mélange of crown-group characters. Nature: vol. 394, 2 July, pp. 66–69
- Shubin, N., 1998 [preview]: Evolutionary cut and paste. Nature: vol. 394, 2 July, pp. 12–13
- Vallin, G. & Laurin, M., 2004: Cranial morphology and affinities of Microbrachis, and a reappraisal of the phylogeny and lifestyle of the first amphibians. Journal of Vertebrate Paleontology: Vol. 24, #1, pp. 56–72
External links
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