| Cristigerina Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Genus: | † Cristigerina Leriche, 1905 |
| Species: | †C. crassa |
| Binomial name | |
| †Cristigerina crassa Leriche, 1905 | |
Cristigerina is an extinct genus of prehistoric marine perciform fish that lived during the Eocene. [1] [2] It contains a single species, C. crassa from the early Ypresian of Belgium. [3] [4]
Ceratoichthys is an extinct genus of lookdown-like prehistoric jackfish that lived during the late Ypresian epoch, of the Early Eocene. It contains a single species, C. pinnatiformis of Monte Bolca, Italy. It and Vomeropsis are the only known members of the extinct subfamily Vomeropsinae.
Acestrus is an extinct genus of prehistoric marine ray-finned fish that lived during the lower Eocene in Europe. It contains one species, A. ornatus from the London Clay, known from a single braincase. It is thought to possibly be closely allied with billfish based on the braincase morphology, although it remains uncertain whether it had the rostrum characteristic of billfishes. Some authorities have suggested blochiid affinities.
Kushlukia is an extinct genus of prehistoric bony fish, closely related to the luvar, that lived during the lower Eocene. K. permira is from Eocene portion of the Danata Formation Lagerstatten, of Turkmenistan. A second, as yet undescribed species is from the Fuller's Earth formation Lagerstatten in the Barmer District, of Ypresian Rajasthan, India.
Promegalops is an extinct genus of prehistoric bony fish that lived during the lower Eocene.
Protarpon is an extinct genus of prehistoric bony fish that lived during the lower Eocene.
Argilloberyx is an extinct genus of prehistoric marine bony fish that lived during the lower Eocene. It contains one species, A. prestwichae, known from the London Clay Formation on the Isle of Sheppey, United Kingdom. It is considered a member of the family Berycidae.
Berybolcensis is an extinct genus of prehistoric marine ray-finned fish that lived in the early Eocene. It contains a single species, B. leptacanthus, from the Monte Bolca lagerstatten of Italy. It was a member of the Holocentridae, making it related to modern squirrelfish and soldierfish, although it was more basal than either, and is thought to have diverged from their common ancestor around the Cretaceous-Paleogene boundary. It is thought to be related to Tenuicentrum, another basal holocentrid from the same formation.
Anguilloides is an extinct genus of prehistoric marine eel that lived in the early Eocene. It contains a single species, A. branchiostegalis. Fossils are known from the famous Monte Bolca site of Italy.
Bolcyrus is an extinct genus of prehistoric marine eel that lived during the Early Eocene. It was a member of the family Congridae, which also contains modern conger eels.
Berycomorus is an extinct genus of prehistoric marine ray-finned fish that lived during the late Eocene epoch. It contains a single species, B. firdoussi, from the Pabdeh Formation of Iran.
Bolcanguilla is an extinct genus of prehistoric marine eel that lived during the early division of the Eocene epoch. It contains a single species, B. brachycephala from the Monte Bolca site of Italy. Its exact taxonomic affinities within the Anguilliformes remain uncertain.
Acanthonemus is an extinct genus of prehistoric marine ray-finned fish that lived from the early Eocene. It contains a single species, A. subaureus, known from the famous Monte Bolca site in Italy. It is the only genus in the extinct family Acanthonemidae.
Callipteryx is an extinct genus of prehistoric marine trachiniform fish that lived during the early Eocene. It is the only known member of the extinct family Callipterygidae. It is thought to have been a relative of weeverfishes.
Burtinia is an extinct genus of prehistoric seabream that lived during the middle Eocene. It contains a single species, B. bruxelliensis from the Lede Formation of Belgium.
Properca is an extinct genus of prehistoric marine perciform fish that lived in Europe throughout much of the Cenozoic, from the Paleocene to the Miocene epochs.
Acanthopygaeus is an extinct genus of prehistoric marine perciform fish in the family Siganidae. It is known from the Eocene lagerstätte "Pesciara" in Bolca, Italy.
Aglyptorhynchus is an extinct genus of prehistoric marine billfish that was distributed worldwide from the early Eocene to the early Miocene. Fossils are primarily known from the Northern Hemisphere, but one species is also known to have inhabited the waters off New Zealand.
Aluvarus praeimperialis is an extinct ray-finned fish, known from two headless fossil specimens found in the Pabdeh Formation, a Late Eocene stratum from the Priabonian epoch, of what is now Iran. A. praeimperialis was originally thought to be a luvar, described as "Luvarus praeimperialis", as it was thought to be a predecessor to the modern luvar. A later reexamination of the specimens showed that they were too incomplete to demonstrate such a conclusion and had no clear exclusive shared traits with luvar, and were renamed "Aluvarus", meaning "not luvar" or "different than luvar". However, some authorities still retain it as a luvar.
Coelodus is an extinct genus of marine and possibly freshwater pycnodont fish. It contains only one definitive species, C. saturnusHeckel, 1854, from the Late Cretaceous of Slovenia. Other species from the Late Jurassic to the Eocene have also been attributed to this genus based on isolated dental elements, but their assignment to Coelodus is uncertain, and this genus likely represents a non-monophyletic wastebasket taxon. A potential diagnostic trait is a prearticular tooth row with three regular highly elongated teeth.
Eutrichiurides is an extinct genus of prehistoric cutlass fish.
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