New pycnodont fish (<i>Arcodonichthys pasiegae</i>gen. et sp. nov.) from the Early Cretaceous of the Basque-Cantabrian Basin, northern Spain

Poyato-Ariza, Francisco José; Bermúdez-Rochas, David D.

doi:10.1671/039.029.0116

Cited by 14 publications

(13 citation statements)

References 7 publications

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“…Vomerine and prearticular teeth form an effective crushing dentition, indicating durophagous feeding habits in a wide range of pycnodontiforms (Kriwet, 2001a ). The robust dentate jaw elements and isolated teeth are the most common remains of pycnodontiforms in the fossil record, occurring nearly worldwide in most marine and even brackish water– to freshwater-influenced deposits of Mesozoic and Palaeogene ages (e.g., Longbottom, 1984 ; Poyato-Ariza et al, 1998 ; Kriwet, 1999 ; Poyato-Ariza and Bermúdez-Rochas, 2009 ; Martín-Abad and Poyato-Ariza, 2013 ). Disarticulated or articulated skeletons, conversely, are comparably rare.…”

Section: Introductionmentioning

confidence: 99%

“…The validity of many taxa consequently remains ambiguous. Nevertheless, Longbottom ( 1984 ), Kriwet ( 1999 , 2005 , 2008 ), Poyato-Ariza and Bermúdez-Rochas ( 2009 ), and Shimada et al ( 2010 ), among others, demonstrated that the morphology and arrangement of teeth on the vomer and prearticulars in pycnodontiform fishes provide unique combinations of characters and even allow identifying autapomorphic traits for taxon assignment and establishing reliable diagnoses. The importance of recognized autapomorphic characters in phylogenetic analyses, however, needs to be tested.…”

Section: Introductionmentioning

confidence: 99%

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Early Jurassic diversification of pycnodontiform fishes (Actinopterygii, Neopterygii) after the end-Triassic extinction event: evidence from a new genus and species,Grimmenodon aureum

Stumpf

Ansorge

Pfaff

et al. 2017

Journal of Vertebrate Paleontology

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A new genus and species of pycnodontiform fishes, Grimmenodon aureum, from marginal marine, marine-brackish lower Toarcian (Harpoceras exaratum ammonite subzone) clay deposits of Grimmen in northeastern Germany is described. The single specimen represents a diagnostic left prearticular dentition characterized by unique tooth arrangement and ornamentation patterns. Grimmenodon aureum, gen. et sp. nov., is the second unambiguously identified pycnodontiform species from the Early Jurassic, in addition to Eomesodon liassicus from the early Lower Jurassic of western Europe. We also report an indeterminate pycnodontiform tooth crown from the upper Pliensbachian (Pleuroceras apyrenum ammonite subzone) of the same site. The material expands the Early Jurassic range of pycnodontiforms significantly northwards and confirms their presence before and immediately following the onset of the Toarcian Oceanic Anoxic Event (T-OAE) in the marginal marine ecosystems south of the Fennoscandian Shield. Moreover, the new records indicate that the Early Jurassic diversity of pycnodontiform fishes was greater than previously assumed and probably equaled that of the Late Triassic. Therefore, it is hypothesized that the Triassic-Jurassic mass extinction event did not affect pycnodontiform fishes significantly. Micro-computed tomography was used to study the internal anatomy of the prearticular of Grimmenodon aureum, gen. et sp. nov. Our results show that no replacement teeth were formed within the tooth-bearing bone but rather were added posteriorly to functional teeth. http://zoobank.org/urn:lsid:zoobank.org:pub:A56BDE9C-40C4-4CFA-9C2E-F5FA35A66F2 Citation for this article: Stumpf, S., J. Ansorge, C. Pfaff, and J. Kriwet. 2017. Early Jurassic diversification of pycnodontiform fishes (Actinopterygii, Neopterygii) after the end-Triassic extinction event: Evidence from a new genus and species, Grimmenodon aureum. Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2017.1344679.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Early Jurassic diversification of pycnodontiform fishes (Actinopterygii, Neopterygii) after the end-Triassic extinction event: evidence from a new genus and species,Grimmenodon aureum

Stumpf

Ansorge

Pfaff

et al. 2017

Journal of Vertebrate Paleontology

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“…23a). The presence of three tooth rows in both the vomerine and prearticular dentitions is known in several other pycnodontiform taxa (e.g., Arcodonichthys, Paramicrodon, Phacodus, Proscinetes, Neoproscinetes), but the teeth of the main vomerine tooth row are never triangular in contour and are always larger and wider that those of lateral rows (Thurmond, 1974;Hooks et al, 1999;Poyato-Ariza et al, 1999;Poyato-Ariza and Wenz, 2002;Poyato-Ariza and Bermúdez-Rochas, 2009). Lastly, it is worth noting that a rugose tooth crown ornamentation rather similar to that of Cosmodus is convergently present in the large Eocene species Pycnodus mokattamensis, an otherwise distinct pycnodont with five vomerine tooth rows and suboval teeth (Priem, 1897(Priem, , 1899).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The order Pycnodontiformes is a widespread group of ray-finned fishes known from the Upper Triassic to the Eocene (e.g., Martín-Abad and Poyato-Ariza, 2013). Although pycnodontiform genera and species should be preferably defined and diagnosed on the basis of complete, articulated skeletons (Poyato-Ariza and Wenz, 2002), isolated vomerine and prearticular dentitions with unique features (or unique combinations of characters) are still regularly used to erect new taxa (e.g., Poyato-Ariza and Bermúdez-Rochas, 2009;Shimada et al, 2010;Stumpf et al, 2017;Vullo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Reassessment of Cosmodus Sauvage, 1879, a poorly known genus of large pycnodont fish (Actinopterygii, Pycnodontiformes) from the Cenomanian (Upper Cretaceous) of Western Europe

Vullo

Archambeau

Bailly

et al. 2018

Cretaceous Research

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The large pycnodontiform fish genus Cosmodus Sauvage, 1879 is redescribed on the basis of both historical material and new specimens, and a formal diagnosis is proposed. The vomerine and prearticular dentitions of Cosmodus show a unique combination of characters, including the morphology and ornamentation of the tooth crowns and the number of tooth rows. Cosmodus is thus recognized as a valid distinct genus, restricted to the middle-upper Cenomanian of Western Europe (France, England, Spain, and possibly Germany) and including a single species, C. carentonensis (Coquand, 1859). Cosmodus shares some peculiar

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“…Subsequently, Poyato-Ariza and Bermúdez-Rochas (2009), for instance, established a new Early Cretaceous pycnodontiform genus based on isolated dental remains. The phylogenetic importance of dental characters, however, remains ambiguous.…”

Section: Introductionmentioning

confidence: 99%

New pycnodontiform fishes (Actinopterygii, Neopterygii) from the Early Cretaceous of the Argentinian Patagonia

Gouiric-Cavalli

Remírez

Kriwet

2019

Cretaceous Research

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Here we describe new pycnodontiform fish material recovered from the marine Agrio Formation (lower Valanginian–lower Hauterivian) of the Neuquén Province in the south-western of Patagonia, Argentina. The new material include an incomplete skull and an incomplete prearticular dentition. The incomplete skull consists of some dermal and endochondral elements as well as dental remains and represents a new large-sized gyrodontid that is referred to a new species, Gyrodus huiliches. Gyrodus huiliches sp. nov. is characterized by a unique combination of tooth crown ornamentations and tooth shape separating it easily from all known Gyrodus species. The incomplete prearticular dentition shows a tooth arrangement and sculpture that resembles that of “Macromesodon” agrioensis –the previously only known pycnodontiform in the area. This allows revising this species, which was based on an isolated vomerine dentition and which we refer to a new genus, Tranawuen. The new Patagonian fishes reported here expand the knowledge of South American pycnodontiforms. We hypothesize that meanwhile the new Patagonian genus – Tranawuen– diverged from Gyrodus after it migrated into the eastern Pacific through the Hispanic Corridor during the Late Jurassic, the new species –Gyrodus huiliches– most likely diverged from a Central or South American species of Gyrodus. Both represent the youngest gyrodontid records and simultaneously the southernmost Early Cretaceous occurrences of pycnodontiform fishes.

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New pycnodont fish (Arcodonichthys pasiegaegen. et sp. nov.) from the Early Cretaceous of the Basque-Cantabrian Basin, northern Spain

Cited by 14 publications

References 7 publications

Early Jurassic diversification of pycnodontiform fishes (Actinopterygii, Neopterygii) after the end-Triassic extinction event: evidence from a new genus and species,Grimmenodon aureum

Early Jurassic diversification of pycnodontiform fishes (Actinopterygii, Neopterygii) after the end-Triassic extinction event: evidence from a new genus and species,Grimmenodon aureum

Reassessment of Cosmodus Sauvage, 1879, a poorly known genus of large pycnodont fish (Actinopterygii, Pycnodontiformes) from the Cenomanian (Upper Cretaceous) of Western Europe

New pycnodontiform fishes (Actinopterygii, Neopterygii) from the Early Cretaceous of the Argentinian Patagonia

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