Hypsidoridae
| Hypsidoridae | ||||||||||||
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| Temporal occurrence | ||||||||||||
| Middle Eocene | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Hypsidoridae | ||||||||||||
| Grande , 1987 |
The Hypsidoridae are an extinct family from the order of the catfish-like (Siluriformes) and the only family of the superfamily Hypsidoroidea. The family is known from finds of two species from the strata of the Middle Eocene : Hypsidoris farsonensis from Wyoming and Hypsidoris oregonensis from Oregon .
In contrast to all catfish living today, apart from the primitive catfish, the animals have teeth on a well-developed upper jaw bone . They have a supraoperculum over the gill cover and six infraorbital bones. The caudal fin has 17 primary rays.
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- Joseph S. Nelson : Fishes of the world . 4th edition. John Wiley & Sons, Hoboken 2006, ISBN 978-0-471-25031-9 , pp. 165 .