Changxingia

Changxingia
Temporal range: Changhsingian
↓
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Sarcopterygii
Class: Actinistia
Order: Coelacanthiformes
Family: †Mawsoniidae
Genus: †Changxingia
Wang & Liu, 1981
Species
  • †C. aspratilis Wang & Liu, 1981
  • †C. weii Jin, 1997

Changxingia is a genus of prehistoric marine lobe-finned fish that belonged to the coelacanth family Mawsoniidae. It lived during the Late Permian in Zhejiang, southern China.[1] It contains two species, C. aspiratilis Wang & Liu, 1981 (the type species) and C. weii Jin, 1997, which were named in 1981 and 1997 from specimens found at the same locality. They are the first Permian marine coelacanths found in Asia.[2][3]

It is thought to be the oldest known representative of the family Mawsoniidae, which are related to the extant latimeriids, although this placement has been disputed and little taxonomic analysis has been done to verify it.[4][5]

It is named after the Changxing Formation, the geological formation it was found in, which also gives its name to the Changhsingian, the final stage of the Permian period.[6]

References

  1. ^ Miguel, R.; Gallo, V.; Morrone, J.J. (2014). "Distributional patterns of †Mawsoniidae (Sarcopterygii: Actinistia)". Anais da Academia Brasileira de Ciências. 86 (1): 159–170. doi:10.1590/0001-3765201420130035. PMID 24519009.
  2. ^ Wang, N.; Liu, H. (1981). "Coelacanth Fishes from the Marine Permian of Zhejiang, South China" (PDF). Vertebrata PalAsiatica. 19 (4): 305–312.
  3. ^ Geng, B.-H.; Zhu, M.; Jin, F. (2009). "A Revision and Phylogenetic Analysis of Guizhoucoelacanthus (Sarcopterygii, Actinistia) from the Triassic of China" (PDF). Vertebrata PalAsiatica. 47 (3): 165–177.
  4. ^ Miguel, Raphael; Gallo, Valéria; Morrone, Juan J. (2014). "Distributional patterns of †Mawsoniidae (Sarcopterygii: Actinistia)". Anais da Academia Brasileira de Ciências. 86: 159–170. doi:10.1590/0001-3765201420130035. ISSN 0001-3765.
  5. ^ Toriño, Pablo; Soto, Matías; Perea, Daniel (2021-12-02). "A comprehensive phylogenetic analysis of coelacanth fishes (Sarcopterygii, Actinistia) with comments on the composition of the Mawsoniidae and Latimeriidae: evaluating old and new methodological challenges and constraints". Historical Biology. 33 (12): 3423–3443. doi:10.1080/08912963.2020.1867982. ISSN 0891-2963.
  6. ^ Benton, Michael J.; Zhang, Qiyue; Hu, Shixue; Chen, Zhong-Qiang; Wen, Wen; Liu, Jun; Huang, Jinyuan; Zhou, Changyong; Xie, Tao; Tong, Jinnan; Choo, Brian (2013). "Exceptional vertebrate biotas from the Triassic of China, and the expansion of marine ecosystems after the Permo-Triassic mass extinction". Earth-Science Reviews. 125: 199–243. doi:10.1016/j.earscirev.2013.05.014. ISSN 0012-8252.
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