Achoania
| Achoania Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Osteichthyes |
| Genus: | †Achoania Zhu, Yu & Ahlberg, 2001 |
| Species: | †A. jarvikii |
| Binomial name | |
| †Achoania jarvikii Zhu, Yu & Ahlberg, 2001 | |
Achoania is an extinct genus of primitive marine bony fish which lived during the Early Devonian period. It is known from a skull discovered in the Xitun Formation of Yunnan, China.[1] While originally considered to be a lobe-finned fish, later studies suggested that it may be a stem-group Osteichthyes instead.[2]
The morphology of the eye socket suggests that Achoania had an eyestalk connecting each eye to its head. This feature is rarely seen in most early bony fish, although it is also present in Psarolepis.[1]
References
- 1 2 Zhu, Min; Yu, Xiaobo; Ahlberg, Per E. (2001). "A primitive sarcopterygian fish with an eyestalk". Nature. 410 (6824): 81–84. doi:10.1038/35065078. ISSN 0028-0836. PMID 11242045. S2CID 4416579.
- ↑ King, Benedict (July 2019). "Which morphological characters are influential in a Bayesian phylogenetic analysis? Examples from the earliest osteichthyans". Biology Letters. 15 (7) 20190288. doi:10.1098/rsbl.2019.0288. ISSN 1744-9561. PMC 6684994. PMID 31311486.
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