| 词条 | Yarnemia |
| 释义 |
|name = Yarnemia |fossil_range = Ediacaran | image = Yarnemia acidiformis.jpg | image_width = 250px | image caption = reconstruction as a tunicate-like animal | regnum = Animalia | phylum = ?Chordata | subphylum = ?Tunicata | genus = Yarnemia | genus_authority = Nesov in Chistyakov et al., 1984 | species = Y. ascidiformis | species_authority = Nesov in Chistyakov et al., 1984 | binomial = Yarnemia ascidiformis }}Yarnemia ascidiformis is a fossil tentatively classified as a tunicate. While Y. ascidiformis looks similar to tunicates, the oldest unequivocal tunicate, Shankouclava[1] dates to the Cambrian period, while Y. ascidiformis is Ediacaran in age.[2][3] EtymologyThe generic name Yarnemia comes from the village of Yarnema near which the first specimens were found. The specific name of the Y. ascidiformis refers to the likeness to ascidians. See alsoOther Ediacaran biota tentatively identified as tunicates include
References1. ^Chen, Jun-Yuan, et al. "The first tunicate from the Early Cambrian of South China." Proceedings of the National Academy of Sciences 100.14 (2003): 8314-8318. {{Taxonbar|from=Q8049424}}{{tunicata-stub}}{{Ediacaran-stub}}{{Precambrian-animal-stub}}{{paleo-deuterostome-stub}}2. ^University of California Museum of Paleontology Berkeley 3. ^{{Cite journal | author = Chistyakov, V.G., Kalmykova, N.A., Nesov, L.A., and Suslov, G.A., | year = 1984 | title = О наличии вендских отложений в среднем течении р. Онеги и возможном существовании оболочечников (Tunicata: Chordata) в докембрии |trans-title= On the Presence of Vendian Deposits in the Middle Course of the Onega River and Presumable Existence of Tunica (Tunicata: Chordata) in Precambrian | journal = Vest. Leningrad. Gos. Univ. (LGU) | volume = 6 | pages = 11–19 | url = http://vend.paleo.ru/pub/Chistyakov_et_al_1984.pdf | language = Russian| archive-url=https://web.archive.org/web/20070207064301/http://vend.paleo.ru/pub/Chistyakov_et_al_1984.pdf|archive-date=February 7, 2007}} 4 : Ediacaran biota|Tunicate genera|Prehistoric chordate genera|Fossil taxa described in 1984 |
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