Biology:Misikella
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| Genus: | †Misikella |
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Misikella is an extinct genus of conodonts.[2]
Two species were named as type species for the genus in separate publications by the same authors in the same year (1974). The first paper named Misikella longidentata, while the second named Misikella posthernsteini. Most species assigned to Misikella have a Norian-Rhaetian distribution and a bimembrate conodont apparatus, including M. posthernsteini. On the other hand, M. longidentata has a Carnian-Norian distribution and a tetramembrate apparatus. Fåhræus & Ryley (1989) retained the name Misikella for only M. longidentata, placing the rest of the species into the new genus Axiothea.[3] However, other conodont specialists utilize the name Misikella primarily in the context of M. posthernsteini and other bimembrate species, rather than M. longidentata.[2] Uniquely, M. posthernsteini is known from the Hettangian of Japan,[4] suggesting that conodonts underwent extinction debt and then were outcompeted by other organisms.
Use in stratigraphy
The top of the Norian (the base of the Rhaetian, stages of the Upper Triassic) is close to the first appearance of several species of Misikella, as well as Epigondolella mosheri. In 2010, the Norian-Rhaetian boundary was defined by the first appearance of Misikella posthernsteini.[5]
The most often-discussed Rhaetian GSSP Candidate sections are in Steinbergkogel in Austria,[6] or Pignola-Abriola in Italy.[7]
References
- ↑ Misikella posthernsteini n. sp., die jüngste Conodontenart der tethyalen Trias. H Kozur, R Mock, Cí asopis Min. Geol. Roc, 1974
- ↑ 2.0 2.1 Karádi, Viktor; Cau, Andrea; Mazza, Michele; Rigo, Manuel (2019-04-02). "The last phase of conodont evolution during the Late Triassic: Integrating biostratigraphic and phylogenetic approaches" (in en). Palaeogeography, Palaeoclimatology, Palaeoecology 549: 109144. doi:10.1016/j.palaeo.2019.03.045. ISSN 0031-0182. http://www.sciencedirect.com/science/article/pii/S0031018218301767.
- ↑ Fåhræus, Lars. E.; Ryley, C. Christopher (1989-06-01). "Multielement species of Misikella Kozur and Mock, 1974 and Axiothea n.gen. (Conodonta) from the Mamonia Complex (Upper Triassic), Cyprus". Canadian Journal of Earth Sciences 26 (6): 1255–1263. doi:10.1139/e89-106. ISSN 0008-4077. Bibcode: 1989CaJES..26.1255F. https://www.nrcresearchpress.com/doi/abs/10.1139/e89-106.
- ↑ Du, Yixing; Onoue, Tetsuji; Tomimatsu, Yuki; Wu, Qiangwang; Rigo, Manuel (2023). "Lower Jurassic conodonts from the Inuyama area of Japan: implications for conodont extinction". Frontiers in Ecology and Evolution 11. doi:10.3389/fevo.2023.1135789. ISSN 2296-701X.
- ↑ Krystyn, Leopold (March 2010). "Decision report on the defining event for the base of the Rhaetian stage.". Albertiana 38: 11–12. http://paleo.cortland.edu/albertiana/issues/Albertiana_38.pdf#page=11.
- ↑ Krystyn, L.; Bouquerel, H.; Kuerschner, W.; Richoz, S.; Gallet, Y. (2007). "Proposal for a candidate GSSP for the base of the Rhaetian Stage". New Mexico Museum of Natural History and Science 41: 189–199. https://www.researchgate.net/publication/46691101.
- ↑ Rigo, Manuel; Bertinelli, Angela; Concheri, Giuseppe; Gattolin, Giovanni; Godfrey, Linda; Katz, Miriam E.; Maron, Matteo; Mietto, Paolo et al. (2016). "The Pignola-Abriola section (southern Apennines, Italy): a new GSSP candidate for the base of the Rhaetian Stage" (in en). Lethaia 49 (3): 287–306. doi:10.1111/let.12145. ISSN 1502-3931. https://www.researchgate.net/publication/281461104.
- Conodonts of the genus Misikella Kozur and Mock, 1974 from the Rhaetian of the Tatra Mts (West Carpathians). A Gazdzicki, Acta Palaeontologica Polonica, 1978
External links
- Misikella at fossilworks.org (retrieved 13 July 2016)
Wikidata ☰ Q28431180 entry
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