| Palvennia Temporal range: Tithonian ~150–145 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
|---|---|
Scientific classification 
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| 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. 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. It was originally 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. A second specimen, which included both cranial and anterior postcranial material, was described in 2018. In 2019, Palvennia was synonymized with Arthropterygius, though maintained as a separate species, by Nikolay Zverkov and Natalya Prilepskaya, 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.
See also
References
- ^ 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" (PDF). Norwegian Journal of Geology. 92 (2–3): 311–339. ISSN 0029-196X.
- "†Palvennia Druckenmiller et al. 2012". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
- 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. Bibcode:2014PLoSO...9j3152R. doi:10.1371/journal.pone.0103152. PMC 4118863. PMID 25084533.
- Delsett, Lene Liebe; Druckenmiller, Patrick Scott; Roberts, Aubrey Jane; Hurum, Jørn Harald (12 October 2018). "A new specimen of Palvennia hoybergeti: implications for cranial and pectoral girdle anatomy in ophthalmosaurid ichthyosaurs". PeerJ. 6: e5776. doi:10.7717/peerj.5776. hdl:10852/71096. ISSN 2167-8359. PMID 30345178. Retrieved 6 September 2024.
- 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. PMC 6497043. 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. hdl:10852/76089. S2CID 210294877.
| Taxon identifiers | |
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| Palvennia | |
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