Amphistium
| Amphistium paradoxum |
|
|---|---|
 |
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Scientific classification  |
|
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Superorder: | Acanthopterygii |
| Order: | Pleuronectiformes |
| Genus: | †Amphistium Agassiz, 1835 |
| Species: |
† A. paradoxum
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| Binomial name | |
| Amphistium paradoxum Agassiz, 1835
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|
Amphistium paradoxum, the only species classified under the genus Amphistium, is a fossil fish which has been identified as an early relative of the flatfish, and as a transitional fossil.[1] In a typical modern flatfish, the head is asymmetric with both eyes on one side of the head. In Amphistium, the transition from the typical symmetric head of a vertebrate is incomplete, with one eye placed near the top of the head.[2]
Amphistium is among the many fossil fish species known from the Monte Bolca Lagerstätte of Lutetian Italy. Heteronectes is a related, and very similar fossil from a slightly earlier strata of France.
References
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