Results 21 to 30 of about 8,491 (227)

Diversity of chondrostean fish Coccolepis from the Late Jurassic Solnhofen Archipelago, Southern Germany [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Late Jurassic marine vertebrates are extraordinarily well preserved in several Plattenkalk Lagerstätten in central Europe. Among them, the Solnhofen Archipelago has yielded the very rare fish Coccolepis bucklandi, which was the first fossil ...
ADRIANA LÓPEZ-ARBARELLO, MARTIN EBERT
doaj   +1 more source

Unappreciated Cenozoic ecomorphological diversification of stem gars revealed by a new large species [PDF]

open access: yesActa Palaeontologica Polonica, 2022
The evolutionary history of gars, an ancient group of ray-finned fishes, is excellently documented in the fossil record. These fishes are notable for how little the anatomy of extant species differs from that of their earliest known relatives from ...
CHASE DORAN BROWNSTEIN
doaj   +1 more source

A primitive actinopterygian braincase from the Tournaisian of Nova Scotia [PDF]

open access: yesRoyal Society Open Science, 2018
The vertebrate fossil record of the earliest Carboniferous is notoriously poorly sampled, obscuring a critical interval in vertebrate evolution and diversity.
Conrad D. Wilson   +2 more
doaj   +1 more source

Les « ichtyolites » (Actinopterygii) de la collection Jean-Baptiste Beurard (1745–1835) : intérêt historique et redécouverte de la série type d’Armigatus brevissimus (Blainville, 1818) du Cénomanien du Liban

open access: yesBSGF - Earth Sciences Bulletin, 2021
Cet article souligne le rôle Jean-Baptiste Beurard dans l’histoire de la paléoichtyologie. Ancien chanoine de la cathédrale de Toul, il trouva après les affres des débuts de la Révolution un emploi d’agent du gouvernement attaché à l’administration des ...
Brignon Arnaud
doaj   +1 more source

A giant dapediid from the Late Triassic of Switzerland and insights into neopterygian phylogeny [PDF]

open access: yesRoyal Society Open Science, 2018
A new Triassic neopterygian is described on the basis of a large three-dimensional neurocranium from the Rhaetian (Late Triassic) of the Kössen Formation (Schesaplana, Grisons, Switzerland).
Ashley E. Latimer, Sam Giles
doaj   +1 more source

The most complete amiid fish from the Coal Creek Member of the Eocene Kishenehn Formation in northwestern Montana

open access: yesActa Palaeontologica Polonica, 2022
The larger-bodied fish fauna of the Kishenehn Formation’s Coal Creek Member (Eocene, 43.5 Ma), northwestern Montana, is understudied because of a sampling bias towards small specimens. Small specimens (
JACOB D. GARDNER, MARK V.H. WILSON
doaj   +1 more source

A new specimen of Birgeria liui (Osteichthyes, Actinopterygii) from the Longobardian (Ladinian, Middle Triassic) of Xingyi, Guizhou Province, South China [PDF]

open access: yesResearch & Knowledge, 2017
Birgeria was one of the largest carnivorous ishes from the Triassic, spanning almost the entire period and, with an almost cosmopolitan distribution. Birgeria liui was originally described based on the incomplete holotype from the Middle Triassic marine ...
Ni Peigang   +3 more
doaj   +1 more source

A Hiatus Obscures the Early Evolution of Modern Lineages of Bony Fishes

open access: yesFrontiers in Earth Science, 2021
About half of all vertebrate species today are ray-finned fishes (Actinopterygii), and nearly all of them belong to the Neopterygii (modern ray-fins). The oldest unequivocal neopterygian fossils are known from the Early Triassic.
Carlo Romano
doaj   +1 more source

Feeding convergence among ray-finned fishes: Teeth of the herbivorous actinopterygians from the latest Permian of East European Platform, Russia [PDF]

open access: yesActa Palaeontologica Polonica, 2020
unique functional adaptation to herbivory within early ray-finned fishes is exemplified by the late Permian actinopterygians within the family Eurynotoidiidae with policuspid teeth strongly modified with respect to the primitive actinopterygian ...
Maciej Pindakiewicz   +8 more
doaj   +1 more source

Actinopterygii

open access: yes, 2020
Key to species of fishes from the Coto River basin, Pacific coast, Costa Rica The following key is based on our research and data available in the literature (Bussing 1987, 1998, Angulo et al. 2015 and Robertson & Allen 2015). 1 Body asymmetrical, strongly compressed laterally; both eyes on the same side of head..............................
Angulo, Arturo   +4 more
openaire   +2 more sources

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