Yongdongaspis, colloquially known as the Binhai Yongdong,[1][2] is an extinct genus of galeaspid vertebrates within the monotypic family Yongdongaspididae. The type species is Y. littoralis and it was found in the Silurian-aged Huixingshao Formation of China.[3] This makes it the oldest known fish fossil discovered in Chongqing to date.
| Yongdongaspis | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Galeaspida |
| Order: | †Eugaleaspidiformes |
| Family: | †Yongdongaspididae Chen et al., 2022 |
| Genus: | †Yongdongaspis Chen et al., 2022 |
| Species: | †Y. littoralis
|
| Binomial name | |
| †Yongdongaspis littoralis Chen et al., 2022
| |
Discovery and naming
editThe holotype was excavated in July 2020 and was prepared in 2021, before being named as the new species Yongdongaspis littoralis in July 2022.[3]
Description
editBased on the holotype, Yongdongaspis only grew to around 5 centimetres (2.0 in) long.[2][3]
References
edit- ^ "Over 400-mln-yr-old fossil of fish found in China - China.org.cn". www.china.org.cn.
- ^ a b "They find remains of a fish that lived 400 million years ago". March 4, 2022.
- ^ a b c Chen, Yang; Gai, Zhikun; Li, Qiang; Wang, Jianhua; Peng, Lijian; Wei, Guangbiao; Zhu, Min (April 2022). "A New Family of Galeaspids (Jawless Stem-Gnathostomata) from the Early Silurian of Chongqing, Southwestern China". Acta Geologica Sinica - English Edition. 96 (2): 430–439. Bibcode:2022AcGlS..96..430C. doi:10.1111/1755-6724.14909. S2CID 247063430.
 | This article about a prehistoric jawless fish is a stub. You can help Wikipedia by expanding it. |
 | This article related to a Silurian animal is a stub. You can help Wikipedia by expanding it. |