// Workers AI · dad joke modeWhat did Eosteus say? "I'm extinct, but my name osteus stands
| Eosteus Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Osteichthyes |
| Genus: | †Eosteus |
| Species: | †E. chongqingensis |
| Binomial name | |
| †Eosteus chongqingensis Zhu et al., 2026 | |
Eosteus is an extinct monotypic genus of basal bony fish that lived in what is now China during the Telychian stage of the Llandovery epoch.
Description
[edit]Eosteus chongqingensis was fusiform in overall body appearance. It possessed caudal fulcra and a single dorsal fin, features characteristic of actinopterygians. It also had pectoral, dorsal, and anal fin spines, serial dorsal plates, and an absence of lepidotrichia, features shared with stem group chondrichthyans.[1]
References
[edit]- ↑ Zhu, You-An; Chen, Yang; Li, Qiang; Zhao, Wen-Jin; Zhou, Zheng-Da; Jia, Lian-Tao; Yu, Yi-Lun; Yu, Han-Xin; Wei, Guang-Biao; Ahlberg, Per E.; Lu, Jing; Zhu, Min (5 March 2026). "The oldest articulated bony fish from the early Silurian period". Nature. 651 (8104): 128–134. doi:10.1038/s41586-026-10125-2. ISSN 0028-0836. Retrieved 11 April 2026 – via Nature Publishing Group.
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