Heteronectes
| Heteronectes chaneti Temporal range: Middle Eocene | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Pleuronectiformes |
| Genus: | †Heteronectes Friedman, 2008 |
| Species: | †H. chaneti |
| Binomial name | |
| Heteronectes chaneti Friedman, 2008 | |
Heteronectes chaneti is a fossil fish which has been identified as an early relative of the flatfish, and as a transitional fossil. In a typical modern flatfish, the head is asymmetric with both eyes on one side of the head. In Heteronectes, the transition from the typical symmetric head of a vertebrate is incomplete, with one eye positioned near the top of the head, very similar, but less so than its Italian relative, Amphistium.[1][2]
Heteronectes is found in the early to middle Eocene of France.
References
- ↑ Matt Friedman (2008-07-10). "The evolutionary origin of flatfish asymmetry". Nature. 454 (7201): 209–212. doi:10.1038/nature07108. PMID 18615083.
- ↑ Matt Friedman (2012). "Osteology of Heteronectes chantey (Acanthomorpha, Pleuronectiformes), an Eocene stem flatfish, with a discussion of flatfish sister-group relationships". Journal of Vertebrate Paleontology. 21 (4): 735–756. doi:10.1080/02724634.2012.661352.
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