Archaeonectrus
Archaeonectrus is an extinct genus of pliosaur from the Early Jurassic (Sinemurian) of what is now southeastern England. The type species is Archaeonectrus (originally "Plesiosaurus") rostratus, first named by Sir Richard Owen in 1865, which was moved to its own genus by N.I. Novozhilov in 1964. It was a relatively small plesiosaur, measuring 3.67 m (12.0 ft) long.[1]
Additional specimen
| Archaeonectrus Temporal range: Early Jurassic, | |
|---|---|
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| Holotype specimen BMNH 38525 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Superorder: | †Sauropterygia |
| Order: | †Plesiosauria |
| Family: | †Rhomaleosauridae |
| Genus: | †Archaeonectrus Novozhilov, 1964 |
| Type species | |
| †Archaeonectrus rostratus Owen, 1865 | |
Classification
Illustration of the holotype specimen, BMNH 38525, dated to c. 1870
Life restoration
The cladogram below shows Archaeonectrus phylogenetic position among other plesiosaurs, following Benson et al. (2012).[2]
| Plesiosauria |
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References
- Valentin Fischer; Nikolay G. Zverkov; Maxim S. Arkhangelsky; Ilya M. Stenshin; Ivan V. Blagovetshensky; Gleb N. Uspensky (2020). "A new elasmosaurid plesiosaurian from the Early Cretaceous of Russia marks an early attempt at neck elongation". Zoological Journal of the Linnean Society. 192 (4): 1167–1194. doi:10.1093/zoolinnean/zlaa103. hdl:2268/251614.Supplementary Information
- Roger B. J. Benson; Mark Evans & Patrick S. Druckenmiller (2012). "High Diversity, Low Disparity and Small Body Size in Plesiosaurs (Reptilia, Sauropterygia) from the Triassic–Jurassic Boundary". PLOS ONE. 7 (3): e31838. Bibcode:2012PLoSO...731838B. doi:10.1371/journal.pone.0031838. PMC 3306369. PMID 22438869.
- Sepkoski, J.J. (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 363: 1-560.
External links
- Archaeonectrus in the Paleobiology Database
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