Biology:Palvennia
| Palvennia | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | †Ichthyosauria |
| Family: | †Ophthalmosauridae |
| Genus: | †Palvennia Druckenmiller et al., 2012 |
| Type species | |
| †Palvennia hoybergeti Druckenmiller et al., 2012
| |
Palvennia is an extinct genus of ophthalmosaurid ichthyosaurian known from the uppermost Jurassic of Central Spitsbergen, Norway .[1][2] It was named for PalVenn, the Friends of the Palaeontological Museum in Oslo, whose expedition led to the discovery of the type specimen. Palvennia was a medium-sized ichthyosaur, measuring 3–4 m (9.8–13.1 ft) long.[3] It is known from a single skull from the Slottsmøya Member of the Agardhfjellet Formation (middle Volgian/late Tithonian, Late Jurassic) that measures 86 cm (2 ft 10 in) long. It is unusual in having a very short rostrum (~0.6× the skull length), similar to Ichthyosaurus breviceps. Because of this, the orbit seems very large (0.34× the skull length), but this may be effected by crushing. The single and only known species is Palvennia hoybergeti Druckenmiller et al., 2012.[1] In 2019, Palvennia was synonymized with Arthropterygius, though maintained as a separate species, by Nikolay Zverkov and Natalya Prilepskaya,[4] although this synonymy was objected to later that same year by Lene Delsett and colleagues, who maintained that they were sufficiently different to warrant separate genera.[5]
See also
- List of ichthyosaurs
- Timeline of ichthyosaur research
References
- ↑ 1.0 1.1 Druckenmiller, Patrick S.; Jørn H. Hurum; Espen M. Knutsen; Hans Arne Nakrem (2012). "Two new ophthalmosaurids (Reptilia: Ichthyosauria) from the Agardhfjellet Formation (Upper Jurassic: Volgian/Tithonian), Svalbard, Norway". Norwegian Journal of Geology 92 (2–3): 311–339. ISSN 0029-196X. http://njg.geologi.no/images/NJG_articles/NJG_2_3_2012_17_Druckenmiller_etal_Pr.pdf.
- ↑ "†Palvennia Druckenmiller et al. 2012". Paleobiology Database. Fossilworks. http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=248882.
- ↑ Roberts, A. J.; Druckenmiller, P. S.; Sætre, G. P.; Hurum, J. H. (2014). "A New Upper Jurassic Ophthalmosaurid Ichthyosaur from the Slottsmøya Member, Agardhfjellet Formation of Central Spitsbergen". PLOS ONE 9 (8): e103152. doi:10.1371/journal.pone.0103152. PMID 25084533. Bibcode: 2014PLoSO...9j3152R.
- ↑ Zverkov, N. G.; Prilepskaya, N. E. (2019). "A prevalence of Arthropterygius (Ichthyosauria: Ophthalmosauridae) in the Late Jurassic—earliest Cretaceous of the Boreal Realm". PeerJ 7: e6799. doi:10.7717/peerj.6799. PMID 31106052.
- ↑ Delsett, L. L.; Roberts, A. J.; Druckenmiller, P. S.; Hurum, J. H. (2019). "Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard)". Acta Palaeontologica Polonica 64 (4): 717–743. doi:10.4202/app.00571.2018.
Wikidata ☰ Q2893097 entry
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