Thrissops (from , 'hair' and 'look') is an extinct genus of stem-teleost fish from the Jurassic and Cretaceous periods. Its fossils are known from the Solnhofen Limestone, as well as the Kimmeridge Clay. Thrissops was a fast predatory fish about long, that fed on other bony fish. It had a streamlined body with a deeply cleft tail and only very small pelvic fins. Thrissops was one of the smaller members of the order Ichthyodectiformes, which also included giants like Xiphactinus and Saurodon. References Prehistoric ray-finned fish genera Late Jurassic bony fish Late Jurassic fish of Europe Ichthyodectiformes Solnhofen fauna Late Jurassic genus first appearances Tithonian genera Berriasian genera Valanginian genera Hauterivian genera Barremian genera Aptian genera Albian genera Cenomanian genera Late Cretaceous genus extinctions Taxa_named_by_Louis_Agassiz Fossil taxa described in 1833