9 results on '"Ionoscopiformes"'
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2. Osteology and phylogeny of Robustichthys luopingensis, the largest holostean fish in the Middle Triassic
- Author
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Guang-Hui Xu
- Subjects
Fossils ,Holostei ,Halecomorphi ,Ionoscopiformes ,Evolution ,Medicine ,Biology (General) ,QH301-705.5 - Abstract
The extinct ray-finned fish taxon Robustichthys luopingensis from Luoping, eastern Yunnan, China represents the largest holostean known in the Middle Triassic. Despite its potential significance for investigating the holostean phylogeny and reconstructing the Triassic marine ecosystems, Robustichthys has so far not been described in detail and its phylogenetic position within the Holostei was controversy. This study provides a redescription and revision of Robustichthys based upon a comparative study of eight type specimens and nine new specimens. Newly recognized information includes a toothed parasphenoid, a pair of premaxillae not pierced by the olfactory nerve, a splint-like quadratojugal, a hatchet-shaped hyomandibula, an hourglass-shaped symplectic, anterior and posterior ceratohyals, a complete series of branchiostegal rays, and sclerotic bones. A revised reconstruction of Robustichthys is presented. Results of a cladistic analysis confirmed Robustichthys as an ionoscopiform within the Halecomorphi; the previous placements of Robustichthys as a basal ginglymodian and Ionoscopidae as a basal amiiform clade are not supported. The sister group relationship between Sinamiinae (Sinamia and Ikechaoamia) and Amiinae (Amia and Cyclurus) within the Amiidae is newly recognized. This revised topology provides new insights into the evolution and historical paleoecology of halecomorph fishes.
- Published
- 2019
- Full Text
- View/download PDF
3. Osteology and phylogeny of Robustichthys luopingensis, the largest holostean fish in the Middle Triassic.
- Author
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Xu, Guang-Hui
- Subjects
PHYLOGENY ,CLADISTIC analysis ,OLFACTORY nerve ,ACTINOPTERYGII ,MARINE ecology ,FISH morphology ,FISH anatomy - Abstract
The extinct ray-finned fish taxon Robustichthys luopingensis from Luoping, eastern Yunnan, China represents the largest holostean known in the Middle Triassic. Despite its potential significance for investigating the holostean phylogeny and reconstructing the Triassic marine ecosystems, Robustichthys has so far not been described in detail and its phylogenetic position within the Holostei was controversy. This study provides a redescription and revision of Robustichthys based upon a comparative study of eight type specimens and nine new specimens. Newly recognized information includes a toothed parasphenoid, a pair of premaxillae not pierced by the olfactory nerve, a splint-like quadratojugal, a hatchet-shaped hyomandibula, an hourglass-shaped symplectic, anterior and posterior ceratohyals, a complete series of branchiostegal rays, and sclerotic bones. A revised reconstruction of Robustichthys is presented. Results of a cladistic analysis confirmed Robustichthys as an ionoscopiform within the Halecomorphi; the previous placements of Robustichthys as a basal ginglymodian and Ionoscopidae as a basal amiiform clade are not supported. The sister group relationship between Sinamiinae (Sinamia and Ikechaoamia) and Amiinae (Amia and Cyclurus) within the Amiidae is newly recognized. This revised topology provides new insights into the evolution and historical paleoecology of halecomorph fishes. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
4. Taxonomic revision of Asialepidotus shingyiensis Su, 1959 (Halecomorphi, Holostei) from the Middle Triassic (Ladinian) of Guizhou and Yunnan, China
- Author
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Guang-Hui Xu and Xin-Ying Ma
- Subjects
triassic ,ionoscopiformes ,osteology ,phylogeny ,south china ,Science - Abstract
The holostean fish Asialepidotus shingyiensis, from the Middle Triassic (Ladinian) of Guizhou and Yunnan, China, was previously regarded as either a semionotiform ginglymodian or an amiiform halecomorph. This study provides a revision of this taxonomically controversial taxon based on a comparative study including the holotype and 50 new specimens. Newly recognized anatomical information includes the dermal component on the sphenotic, complete series of circumorbital bones, palatal bones, quadratojugal, hyomandibula, sensory canal in the maxilla, notched posterior margin of the maxilla, median gular, and many elements on the medial surface of the lower jaw. Results of a cladistic analysis incorporating these new data place Asialepidotus as an ionoscopiform halecomorph that is more derived than Subortichthys and Panxianichthys, and consists of the sister taxon of Robustichthys and all other ionoscopiforms.
- Published
- 2017
- Full Text
- View/download PDF
5. Vertebrate paleobiodiversity of the Early Cretaceous (Berriasian) Angeac-Charente Lagerstätte (southwestern France): implications for continental faunal turnover at the J/K boundary
- Author
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Allain, Ronan, Vullo, Romain, Rozada, Lee, Anquetin, Jérémy, Bourgeais, Renaud, Goedert, Jean, Lasseron, Maxime, Martin, Jeremy E., Pérez-García, Adán, Fabrègues, Claire Peyre De, Royo-Torres, Rafael, Augier, Dominique, and Bailly, Gilles
- Subjects
Caudata ,Pterosauria ,Reptilia ,Peramuridae ,Atoposauridae ,Amiiformes ,Pleurosternidae ,Goniopholididae ,Megalosauridae ,Hypsilophodontidae ,Amphibia ,Amphilestidae ,Hybodontiformes ,Choristodera ,Helochelydridae ,Chordata ,Scutellosauridae ,Lonchidiidae ,Saurischia ,Camptosauridae ,Eutriconodonta ,Biodiversity ,Mammalia ,Symmetrodonta ,Anura ,Aves ,Albanerpetontidae ,Ornithischia ,Dromaeosauridae ,Stegosauridae ,Dryolestidae ,Triconodontidae ,Pinheirodontidae ,Multituberculata ,Crocodylia ,Pycnodontes ,Squamata ,Animalia ,Gymnophiona ,Ionoscopiformes ,Archaeopterygidae ,Pycnodontiformes ,Taxonomy ,Actinopterygii ,Woutersiidae ,Plagiaulacidae ,Pycnodontidae ,Pholidosauridae ,Rhynchocephalia ,Sphenodontidae ,Cteniogenyidae ,Spalacotheriidae ,Testudines ,Paramacellodidae ,Bernissartiidae ,Elasmobranchii - Abstract
Allain, Ronan, Vullo, Romain, Rozada, Lee, Anquetin, Jérémy, Bourgeais, Renaud, Goedert, Jean, Lasseron, Maxime, Martin, Jeremy E., Pérez-García, Adán, Fabrègues, Claire Peyre De, Royo-Torres, Rafael, Augier, Dominique, Bailly, Gilles (2022): Vertebrate paleobiodiversity of the Early Cretaceous (Berriasian) Angeac-Charente Lagerstätte (southwestern France): implications for continental faunal turnover at the J/K boundary. Geodiversitas 44 (25): 683-752, DOI: 10.5252/geodiversitas2022v44a25
- Published
- 2022
6. Ionoscopiformes Grande & Bemis 1998
- Author
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Allain, Ronan, Vullo, Romain, Rozada, Lee, Anquetin, Jérémy, Bourgeais, Renaud, Goedert, Jean, Lasseron, Maxime, Martin, Jeremy E., Pérez-García, Adán, Fabrègues, Claire Peyre De, Royo-Torres, Rafael, Augier, Dominique, and Bailly, Gilles
- Subjects
Animalia ,Biodiversity ,Ionoscopiformes ,Chordata ,Taxonomy - Abstract
Ionoscopiformes indet. (Fig. 8 E-G) DESCRIPTION Small, curved teeth with a pointed apex bearing two short, blunt carinae are assigned to an indeterminate ionoscopiform (Fig. 8 E-G). Small ganoid scales characterized by a finely serrated posterior margin may also belong to this group. Such a material is similar to that described from the Purbeckian beds of Chassiron (Vullo et al. 2014). As some recent studies suggest that Ionoscopiformes is not a monophyletic clade (Ebert2018; López-Arbarello & Sferco 2018), the material from Angeac-Charente is assigned to Ionoscopiformes sensu Grande & Bemis (1998)., Published as part of Allain, Ronan, Vullo, Romain, Rozada, Lee, Anquetin, Jérémy, Bourgeais, Renaud, Goedert, Jean, Lasseron, Maxime, Martin, Jeremy E., Pérez-García, Adán, Fabrègues, Claire Peyre De, Royo-Torres, Rafael, Augier, Dominique & Bailly, Gilles, 2022, Vertebrate paleobiodiversity of the Early Cretaceous (Berriasian) Angeac-Charente Lagerstätte (southwestern France): implications for continental faunal turnover at the J / K boundary, pp. 683-752 in Geodiversitas 44 (25) on page 694, DOI: 10.5252/geodiversitas2022v44a25, http://zenodo.org/record/6902033, {"references":["VULLO R., ABIT D., BALLEVRE M., BILLON- BRUYAT J. - P., BOURGEAIS R., BUFFETAUT E., DAVIERO- GOMEZ V., GARCIA G., GOMEZ B., MAZIN J. - M., MOREL S., NERAUDEAU D., POUECH J., RAGE J. - C., SCHNYDER J. & TONG H. 2014. - Palaeontology of the Purbeck-type (Tithonian, Late Jurassic) bonebeds of Chassiron (Oleron Island, western France). Comptes Rendus Palevol 13: 421 - 441. https: // doi. org / 10.1016 / j. crpv. 2014.03.003","EBERT M. 2018. - Cerinichthys koelblae, gen. et sp. nov., from the Upper Jurassic of Cerin, France, and its phylogenetic setting, leading to a reassessment of the phylogenetic relationships of Halecomorphi (Actinopterygii). Journal of Vertebrate Paleontology 38 (1): e 1420071. https: // doi. org / 10.1080 / 027 24634.2017. 1420071","LOPEZ- ARBARELLO A. & SFERCO E. 2018. - Neopterygian phylogeny: the merger assay. Royal Society Open Science 5: 172337. https: // doi. org / 10.1098 / rsos. 172337","GRANDE L. & BEMIS W. E. 1998. - A comprehensive phylogenetic study of amiid fishes (Amiidae) based on comparative skeletal anatomy. An empirical search for interconnected patterns of natural history. Journal of Vertebrate Paleontology 18 (suppl. 1): 1 - 696."]}
- Published
- 2022
- Full Text
- View/download PDF
7. Spathiurus dorsalis Davis, 1887, from the Upper Cretaceous of Haqel, Lebanon, and the evolutionary history of Ionoscopiformes.
- Author
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El Hossny, Tamara, Maksoud, Sibelle, Azar, Dany, Abi Saad, Pierre, and Cavin, Lionel
- Abstract
New and well-preserved fossil fish material from the Upper Cretaceous (Cenomanian) of Haqel, Lebanon, is assigned to Spathiurus dorsalis Davis, 1887. Spathiurus dorsalis and Amphilaphurus major are found to be synonymous. A complete re-description of this taxon is provided and delivers new recognized anatomical information, mainly cranial features. Spathiurus dorsalis displays diagnostic characters of ionoscopids and consequently is designated as a new member of this family. A phylogenetic analysis was performed to place this taxon within the Halecomorphi. The studied taxon was recovered as the sister genera of Ionoscopus petrarojae , both derived compared to 'Ionoscopus' cyprinoides , suggesting that the latter should be placed in a distinct genus. The validated placement of Spathiurus within the Ionoscopidae extends the stratigraphic range of this family from the Albian to the Cenomanian and becomes the first record of an ionoscopiform from the Upper Cretaceous and from the Middle East. • New fossil fish material from the Cenomanian of Haqel, Lebanon assigned to Spathiurus dorsalis. • Spathiurus dorsalis found to be an ionoscopid based on new anatomical data and phylogenetic analysis. • Stratigraphic range of Ionoscopidae extended from Albian to Cenomanian. • First record of Ionoscopiform from the Upper Cretaceous and from the Middle East. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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- View/download PDF
8. Anatomic and phylogenetic review of Ionoscopiformes (Actinopterygii: Holostei) from Cretaceous of Brazil (northeastern) and Mexico (Puebla)
- Author
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Machado, Giselle Ribeiro de Paula, Brito, Paulo Marques Machado, Siqueira, Andrea Espínola de, Toledo, Carlos Eduardo Vieira, and Ortega, Jesús Alvarado
- Subjects
Filogenia ,Cretáceo do México ,Cretaceous of Brasil ,Ionoscopiformes ,Review ,Cretáceo do Brasil ,Revisão ,Phylogeny ,CIENCIAS BIOLOGICAS::ZOOLOGIA::PALEOZOOLOGIA [CNPQ] ,Cretaceous of Mexico ,Holostei - Abstract
Submitted by Boris INFORMAT (boris@uerj.br) on 2021-04-26T01:15:05Z No. of bitstreams: 5 Giselle Ribeiro de Paula Machado Dissertacao completa parte 1.pdf: 5020632 bytes, checksum: fb771520bf81fa795612b0a2b97cbdd0 (MD5) Giselle Ribeiro de Paula Machado Dissertacao completa parte 2.pdf: 4892583 bytes, checksum: d6658055ec263c30c7e0d12ca1373d8f (MD5) Giselle Ribeiro de Paula Machado Dissertacao completa parte 3.pdf: 4684434 bytes, checksum: f836cffbd152fa7e19ac43631f750db3 (MD5) Giselle Ribeiro de Paula Machado Dissertacao completa parte 4.pdf: 4599900 bytes, checksum: 5cd4134f206dce7348aa5dab5d7b0351 (MD5) Giselle Ribeiro de Paula Machado Dissertacao completa parte 5.pdf: 2435238 bytes, checksum: 0ccd7efab11a73a962f327bc88157e87 (MD5) Made available in DSpace on 2021-04-26T01:15:05Z (GMT). No. of bitstreams: 5 Giselle Ribeiro de Paula Machado Dissertacao completa parte 1.pdf: 5020632 bytes, checksum: fb771520bf81fa795612b0a2b97cbdd0 (MD5) Giselle Ribeiro de Paula Machado Dissertacao completa parte 2.pdf: 4892583 bytes, checksum: d6658055ec263c30c7e0d12ca1373d8f (MD5) Giselle Ribeiro de Paula Machado Dissertacao completa parte 3.pdf: 4684434 bytes, checksum: f836cffbd152fa7e19ac43631f750db3 (MD5) Giselle Ribeiro de Paula Machado Dissertacao completa parte 4.pdf: 4599900 bytes, checksum: 5cd4134f206dce7348aa5dab5d7b0351 (MD5) Giselle Ribeiro de Paula Machado Dissertacao completa parte 5.pdf: 2435238 bytes, checksum: 0ccd7efab11a73a962f327bc88157e87 (MD5) Previous issue date: 2011-02-24 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior The fossil genera Oshunia and Placidichthys are holosteans, belonging to the Order Ionoscopiformes, from the Early Cretaceous of the Araripe and Tucano basins in Brazil. Ionoscopiformes sensu Grande & Bemis (1998) includes the families Ionoscopidae and Ophiopsidae, however the inner relationships of this clade are still uncertain. Oshunia and Placidichthys belong to the families Ionoscopidae and Ophiopsidae, respectively, and while the genus Oshunia is considered to be monospecific (cf., O. brevis), Placidichthys presents two nominal species (cf., P. bidorsalis and P. tucanensis). Especially due to the fact that these species where described from just a few specimens, there were still several gaps on the knowledge about them, as for example, the possible existence of additional species from the genus Oshunia and the lack of anatomical information, notably from the skull roof, occipital region, check bones, and caudal fin of Placidichthys species. Another debatable matter was the phylogenetic position of these two genera. Given these issues, the objective of the present thesis was to make a revision of the genera Oshunia and Placidichthys, with the aim of increasing the anatomical and taxonomic knowledge about them, and also to make a phylogenetic analysis of Ionoscopiformes, based on data matrixes from the literature, in order to achieve a stronger hypothesis over the relationships of these Brazilian genera. Granted the easy access to Mexican specimens from the Cretaceous of the Tlayúa Formation, the genera Teoichthys and Quetzalichthys were also reviewed on the present work. From a taxomomical point of view, it was not possible to conclude over the existence of new species from the genus Oshunia, however it was evident the presence of a new species belonging to the Mexican genus Teoichthys. The present revision brought a series of new information over the anatomy of these Ionoscopiformes species, such as a first description of the circumorbital and skull roof bones and a reinterpretation over the dorsal fin of Placidichthys bidorsalis, or about the shape of the rostral bone of Teoichthys kallistos. Likewise, this revision also offered new data for the construction of a new phylogenetic hypothesis for Ionoscopiformes, which was considerably distinct from the anterior ones (cf., inner relationships of Ionoscopidae and the placement of the genus Teoichthys). The low support for many clades makes evident the fragility of the phylogenetic hypotheses of Ionoscopiformes, as well as the necessity of a more detailed revision of other species from this group and also of the characters to be used on future phylogenetic analyses. Os gêneros de peixes fósseis Oshunia e Placidichthys são holósteos pertencentes à Ordem Ionoscopiformes e provenientes do Cretáceo Inferior do Brasil, das bacias do Araripe e de Tucano. No clado Ionoscopiformes sensu Grande & Bemis (1998) estão incluídas as famílias Ionoscopidae e Ophiopsidae, todavia as relações internas deste grupo ainda são duvidosas. Oshunia e Placidichthys fazem parte das famílias Ionoscopidae e Ophiopsidae, respectivamente, sendo o gênero Oshunia considerado como mono-específico (cf., O. brevis), enquanto que Placidichthys apresenta duas espécies nominais (cf., P. bidorsalis e P. tucanensis). Em função destas espécies terem sido descritas a partir de poucos espécimes, ainda existiam várias lacunas no conhecimento em relação as mesmas, como, por exemplo, a possibilidade da existência de outras espécies no gênero Oshunia e a falta de informações anatômicas, especialmente do crânio, da região occipital, dos ossos da face e da nadadeira caudal das espécies de Placidichthys. Outro ponto em aberto na literatura era a posição filogenética dos dois gêneros. Frente a estas questões, o objetivo da presente dissertação foi realizar uma revisão anatômica dos gêneros Oshunia e Placidichthys, a fim de ampliar o conhecimento anatômico e taxonômico acerca dos mesmos, além realizar uma análise filogenética da Ordem Ionoscopiformes, baseada em matrizes de caracteres existentes na literatura, para se obter um melhor posicionamento dessas espécies brasileiras. Em função da facilidade de acesso a material mexicano, também foram incluídos nesta revisão os gêneros Teoichthys e Tuetzalichthys provenientes do Cretáceo da Formação Tlayúa, estes também peixes fósseis holósteos pertencentes à Ordem Ionoscopiformes. Do ponto de vista taxonômico, não foi possível confirmar a existência de novas espécies para o gênero Oshunia, entretanto ficou clara a presença de uma nova espécie pertencente ao gênero mexicano Teoichthys. A presente revisão proporcionou uma série de novas informações sobre a anatomia destas espécies de Ionoscopiformes, tais como a descrição dos ossos circumorbitais e do teto craniano e uma reinterpretação acerca da nadadeira dorsal de Placidichthys bidorsalis, ou ainda sobre a forma do rostral de Teoichthys kallistos. Da mesma maneira, esta revisão também ofereceu novos dados para a construção de uma nova hipótese filogenética para Ionoscopiformes, a qual se mostrou consideravelmente distinta das hipóteses filogenéticas anteriores (cf., relações internas de Ionoscopidae e o posicionamento do gênero Teoichthys). O baixo suporte para grande parte dos clados torna evidente a fragilidade das hipóteses de relacionamento interno do clado Ionoscopiformes, bem como a necessidade de uma revisão mais aprofundada das outras espécies deste grupo e dos caracteres a serem utilizados em futuras análises filogenéticas.
- Published
- 2011
9. The oldest ionoscopiform from China sheds new light on the early evolution of halecomorph fishes.
- Author
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Xu GH, Zhao LJ, and Coates MI
- Subjects
- Animals, China, Fishes genetics, Biological Evolution, Fishes anatomy & histology, Fossils
- Abstract
The Halecomorphi are a major subdivision of the ray-finned fishes. Although living halecomorphs are represented solely by the freshwater bowfin, Amia calva, this clade has a rich fossil history, and the resolution of interrelationships among extinct members is central to the problem of understanding the origin of the Teleostei, the largest clade of extant vertebrates. The Ionoscopiformes are extinct marine halecomorphs that were inferred to have originated in the Late Jurassic of Europe, and subsequently dispersed to the Early Cretaceous of the New World. Here, we report the discovery of a new ionoscopiform, Robustichthys luopingensis gen. et sp. nov., based on eight well-preserved specimens from the Anisian (242-247 Ma), Middle Triassic marine deposits of Luoping, eastern Yunnan Province, China. The new species documents the oldest known ionoscopiform, extending the stratigraphic range of this group by approximately 90 Ma, and the geographical distribution of this group into the Middle Triassic of South China, a part of eastern Palaeotethys Ocean. These new data provide a minimum estimate for the split of Ionoscopiformes from its sister clade Amiiformes and shed new light on the origin of ionoscopiform fishes., (© 2014 The Author(s) Published by the Royal Society. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
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