- Hypsidoris
Taxobox
name = "Hypsidoris"
status = fossil
fossil_range = Early MiddleEocene - Middle Eocene
regnum =Animal ia
phylum =Chordata
classis =Actinopterygii
superordo =Ostariophysi
ordo =Siluriformes
superfamilia = Hypsidoroidea
familia = Hypsidoridae
familia_authority = Grande, 1987
genus = "Hypsidoris"
genus_authority = Lundberg & Case, 1970
type_species = "Hypsidoris farsonensis"
type_species_authority = Lundberg & Case, 1970
subdivision_ranks = Binomial name
subdivision =
"Hypsidoris farsonensis"
Lundberg & Case, 1970
"Hypsidoris oregonensis"
Grande & de Pinna, 1998"Hypsidoris" is an extinct genus of
catfish , classified within its own family Hypsidoridae, from theEocene period. It was about 20 cm (8 in) long.Fact|date=April 2007"Hypsidoris" looked very similar to the modern catfish, also possessing sensitive barbels used to detect prey in murky waters. It also had a vibration-sensitive organ called the
Weberian apparatus , which consisted of specializedvertebra e at the front of thespinal column which passed vibrations to theinner ear , using theswim bladder as aresonance chamber . For defense against predators, "Hypsidoris" had large spines at the front of eachpectoral fin .Fact|date=April 2007There are two species. "H. farsonensis" is from the Early Middle Eocene of
Wyoming and "H. oregonensis" is from the Middle Eocene ofOregon .cite book|title=Fishes of the World |last=Nelson|first=Joseph S.|publisher=John Wiley & Sons , Inc|year=2006|isbn=0-471-25031-7]References
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