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Boreolepis is an extinct genus of prehistoric marine ray-finned fish that lived from the Late Kungurian to the Wuchiapingian of the Permian period.It inhabited the high northern latitudes in what is now Greenland and European Russia.
A few living forms, such as the coelacanth are also referred to as prehistoric fish, or even living fossils, due to their current rarity and similarity to extinct forms. Fish which have become recently extinct are not usually referred to as prehistoric fish. Lists of various prehistoric fishes include: List of prehistoric jawless fish; List of ...
Rhenanida ("Rhine fish") were flattened, ray-like, bottom-dwelling predators with large, upturned mouths that lived in marine environments. The rhenanids were once presumed to be the most primitive, or at least the closest to the ancestral placoderm, as their armour was made of unfused components—a mosaic of tubercles—as opposed to the ...
The genus name Potanichthys is a portmanteau of the Ancient Greek ποτάνος (potanos, winged/flying) and ιχθύς (ichthys, fish). The species epithet refers to Xingyi city which is near the site where Potanichthys was discovered. [2] [3] Potanichthys was a small fish with an estimated total length of 15.3 cm (6.0 in). It shared ...
Eugnathides is an extinct genus of prehistoric bony fish that lived from the Oxfordian to the early Tithonian stage of the Late Jurassic epoch. [1] Eugnathides may have been similar to Sphaerodontes (from the Late Jurassic of Cuba ).
Porolepiformes is an order of prehistoric lobe-finned fish which lived during the Devonian period (about 416 to 359 million years ago). They are thought to represent the sister group to lungfish (class Dipnoi). [1] The group contains two families: Holoptychiidae and Porolepididae.
Pteraspidomorphi is an extinct class of early jawless fish. They have long been regarded as closely related or even ancestral to jawed vertebrates, but the few characteristics they share with the latter are now considered as basal traits for all vertebrates.
Dinopteryx ("terrible wing") is an extinct genus of prehistoric beardfish from the Late Cretaceous period. [2] It contains a single species, D. spinosus, known from the Santonian of Lebanon . [1] It is the only member of the extinct family Dinopterygidae, which is considered a distinct family of the Polymixiiformes.