Crossognathiform
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Crossognathiform
Crossognathiformes is an extinct order of ray-finned fish that lived from the Late Jurassic to the Eocene. Its phylogenetic placement is disputed; some authors have recovered it as part of the teleost stem group, while others place it in a basal position within crown group Teleostei. Other placements have found it to be polyphyletic, with Varasichthyidae being stem-group teleosts whereas the other, "true" crossognathiforms are crown-group teleosts within Teleocephala. The oldest definitive crossognathiforms are known from the Late Jurassic (Oxfordian (stage), Oxfordian) of Chile. They diversified afterwards and became a dominant group of marine fish throughout much of the Cretaceous. The last surviving member was the pachyrhizodontid ''Platinx'' from the Eocene. Classification Order Crossognathiformes Taverne, 1989 * ''Bavarichthys'' Arratia & Tischlinger, 2010 * ''Kradimus'' Veysey ''et al.'', 2020 * Family Varasichthyidae Arratia, 1981 ** ''Bobbichthys'' Arratia, 1986 ** ''Dome ...
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Chongichthys
''Chongichthys'' is an extinct genus of marine Actinopterygii, ray-finned fish that lived during the Oxfordian (stage), Oxfordian stage of the Late Jurassic epoch. It contains one species, ''C. dentatus'' from the Quebrada El Profeta of Chile. It is named after Chilean geologist Guillermo Chong. Its phylogenetic relationships have long been enigmatic, with it initially being classified as an indeterminate teleost, or more specifically an indeterminate Clupeocephala, clupeocephalan. However, more recent studies have recovered it as a basal Crossognathiformes, crossognathiform. It is one of the earliest crossognathiforms known. See also * Prehistoric fish * List of prehistoric bony fish References

Crossognathiformes Late Jurassic bony fish Oxfordian genera Jurassic fish of South America Jurassic Chile Fossils of Chile Fossil taxa described in 1982 {{jurassic-fish-stub ...
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