''Crossognathus'' is an extinct genus of marine

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...

from the

Early Cretaceous The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 ...

of Europe. It is the

type genus In biological taxonomy, the type genus (''genus typica'') is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearin ...

of the order

Crossognathiformes 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 ...

and the family Crossognathidae. The following species are known: * †''C. danubiensis'' Cavin & Grigorescu, 2005 - Middle Albian of

Romania Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ...

* †''C. sabaudianus'' Pictet, 1858 (

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

) -

Barremian The Barremian is an age in the geologic timescale (or a chronostratigraphic stage) between 125.77 Ma (million years ago) and 121.4 ± 1.0 Ma (Historically, this stage was placed at 129.4 million to approximately 125 million years ago) It is a ...

Voiron Voiron (; ) is a commune (French municipality) in the Isère department in southeastern France. It is the capital of the canton of Voiron and has been part of the Grenoble-Alpes Métropole since 2010. Voiron is located northwest of Grenoble ...

and late Albian of Vallentigny, France; Barremian of

Hildesheim Hildesheim (; or ; ) is a city in Lower Saxony, in north-central Germany with 101,693 inhabitants. It is in the district of Hildesheim (district), Hildesheim, about southeast of Hanover on the banks of the Innerste River, a small tributary of t ...

& early

Aptian The Aptian is an age (geology), age in the geologic timescale or a stage (stratigraphy), stage in the stratigraphic column. It is a subdivision of the Early Cretaceous, Early or Lower Cretaceous epoch (geology), Epoch or series (stratigraphy), S ...

Helgoland Heligoland (; , ; Heligolandic Frisian: , , Mooring Frisian: , ) is a small archipelago in the North Sea. The islands were historically possessions of Denmark, then became possessions of the United Kingdom from 1807 to 1890. Since 1890, the ...

, Germany

References

Crossognathiformes Prehistoric ray-finned fish genera Barremian genus first appearances Aptian genera Albian genus extinctions Early Cretaceous fish of Europe Early Cretaceous bony fish Fossils of Germany Fossils of France Fossils of Romania Fossil taxa described in 1858 Taxa named by François Jules Pictet de la Rive {{Cretaceous-fish-stub