New information on the giant Devonian lobe-finned fish<i>Edenopteron</i>from the New South Wales south coast

Young, Grant M.; Dunstone, Robert; Ollerenshaw, P. J.; Lu, Junhui; Crook, B

doi:10.1080/08120099.2019.1651769

Cited by 9 publications

(8 citation statements)

References 54 publications

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“…However, alternative interpretations, of endemic tetrapodomorph subgroups (e.g. Canowindridae, Mandageriinae) in Australia-Antarctica (Young 2008;Young et al 1992Young et al , 2013Young et al , 2019 are consistent with the placement of the only Australian taxon (Marsdenichthys) in the analysis of Lu et al (2012, fig. 6), resolved as the sister-group to all other tristichopterids.…”

Section: Osteichthyans: Tetrapodomorphsmentioning

confidence: 52%

Asia–Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations

Young

Lü

2020

J. Palaeogeogr.

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Middle Palaeozoic vertebrate fossil occurrences are summarised for Australia, with reference to faunal connections between Asia and East Gondwana, as first indicated by fish distributions of Lower Devonian fossil sites. Major endemic groups discussed are pituriaspid (Australian) and galeaspid (Asian) agnathans, wuttagoonaspids (Australian) and antarctaspid (Antarctic, Australian, Asian) arthrodires, yunnanolepid and sinolepid antiarchs (South China, Indochina terrane, Australia), and early tetrapodomorphs (South China, Australia). More widespread groups that lived in shallow marine environments (lungfishes, buchanosteid arthrodires, antiarch Bothriolepis) also show species groups shared between South China and East Gondwana. Exchange of continental facies fishes (e.g. tristichopterid tetrapodomorphs) may have been interrupted by marine transgression in the Frasnian, but were restored in the late Famennian with the appearance of Grenfellaspis in eastern Australia, the only sinolepid antiarch known from outside Asia. The hypothesis of Gondwana dispersion and Asian accretion, to explain the collage of geological terranes forming modern east and southeast Asia, implies increasing dissimilarity with increasing age, but the Siluro-Devonian early vertebrate evidence is inconsistent with this. Previous cladistic analysis of Asian terranes predicted galeaspid agnathans on the Indochina terrane, and their subsequent discovery at Ly Hoa, Vietnam, confirms that Indochina and South China had come together across the Song Ma suture by Middle Devonian time.

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Section: Osteichthyans: Tetrapodomorphsmentioning

confidence: 52%

Asia–Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations

Young

Lü

2020

J. Palaeogeogr.

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“…lindae this bone is very narrow and bar-shaped) and a shorter, deeper, lacrimal. In both these respects, Hyneria udlezinye appears to be the more generalized of the two, matching the condition in a wide range of tristichopterids including Eusthenopteron , Cabonnichthys , Eusthenodon and Edenopteron [ 3 , 5 , 6 , 21 , 22 ].…”

Section: Resultsmentioning

confidence: 91%

“…Nevertheless, comparison between the two species indicates that H. udlezinye differs from H. lindae in having a proportionately deeper preopercular (in H. lindae this bone is very narrow and bar-shaped) and a shorter, deeper, lacrimal. In both these respects, Hyneria udlezinye appears to be the more generalized of the two, matching the condition in a wide range of tristichopterids including Eusthenopteron, Cabonnichthys, Eusthenodon and Edenopteron [3,5,6,21,22].…”

Section: Plos Onementioning

confidence: 87%

“…The proportions of the parietal shield are distinctive, with a notably short and broad postpineal region (Fig 3A). This feature is shared with H. lindae, and possibly with Langlieria socqueti [20], but not with other derived tristichopterids such as Eusthenodon, Mandageria, Cabonnichthys or Edenopteron [3][4][5][6]21], in which this region is proportionately longer and often tapers posteriorly towards a proportionately shorter posterior margin.…”

Section: Descriptionmentioning

confidence: 99%

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A high latitude Gondwanan species of the Late Devonian tristichopterid Hyneria (Osteichthyes: Sarcopterygii)

Gess

Ahlberg

2023

PLoS ONE

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We describe the largest bony fish in the Late Devonian (late Famennian) fossil assemblage from Waterloo Farm near Makhanda/Grahamstown, South Africa. It is a giant member of the extinct clade Tristichopteridae (Sarcopterygii: Tetrapodomorpha) and most closely resembles Hyneria lindae from the late Famennian Catskill Formation of Pennsylvania, USA. Notwithstanding the overall similarity, it can be distinguished from H. lindae on a number of morphological points and is accordingly described as a new species, H. udlezinye sp. nov. The preserved material comprises most of the dermal skull, lower jaw, gill cover and shoulder girdle. The cranial endoskeleton appears to have been unossified and is not preserved, apart from a fragment of the hyoid arch adhering to a subopercular, but the postcranial endoskeleton is represented by an ulnare, some semi-articulated neural spines, and the basal plate of a median fin. The discovery of H. udlezinye shows that Hyneria is a cosmopolitan genus extending into the high latitudes of Gondwana, not a Euramerican endemic. It supports the contention that the derived clade of giant tristichopterids, which alongside Hyneria includes such genera as Eusthenodon, Edenopteron and Mandageria, originated in Gondwana.

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“…The authors used this to suggest that the "Eusthenodon" of Worange Point was "closely related to, or the same as our new taxon." Additional study of AMF 134129 and additional collecting at the locality did convince Young et al (2019) to assign all of the tristichopterid fossils from Hegarty Bay to E. keithcrooki. Young (1993) listed "?Eusthenodon sp."…”

Section: Discussionmentioning

confidence: 99%

Second species ofEusthenodon(Tristichopteridae, Sarcopterygii) from the Upper Devonian (Famennian) Catskill Formation of Pennsylvania, U.S.A., and a review of globalEusthenodonoccurrence

Downs,

Osatchuck,

Goodchild

et al. 2022

Journal of Vertebrate Paleontology

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A new species of Eusthenodon from the Upper Devonian (Famennian) Catskill Formation was collected from associated talus blocks excavated during road construction along the northbound lanes of U.S. Route 15/Interstate 99 near Trout Run in Lycoming County, Pennsylvania, U.S.A. The new species is represented by isolated or partially articulated cranial bones, an anocleithrum, and body scales from several individuals. The new discovery is the second species of Eusthenodon described from the Catskill Formation after Eusthenodon bourdoni, a species found only at the Cogan House Exit Ramp locality, north of and up section from the Trout Run site. The new species is of a larger size category and exhibits qualities that distinguish it from E. bourdoni including a contact between posterior supraorbital and lacrimal bones that excludes the jugal from the orbital margin and scales with an ornamental field incised by radiating grooves. The clarity offered by the Catskill Formation Eusthenodon species informs an historical review of reports on Eusthenodon occurrence that suggests a polydemic but not cosmopolitan distribution of the taxon. A phylogenetic analysis of Tristichopteridae is presented that includes the new species presented here. The Eusthenodon species at Trout Run is the fifth tristichopterid species described from the Catskill Formation and all five are found to belong to a highly nested clade of largely Famennian tristichopterids. With a growing fauna that additionally includes rhizodontids, dipnoans, holoptychiid porolepiforms, megalichthyids, and limbed tetrapodomorphs, the Catskill Formation of Pennsylvania continues to be an important focus for the study of Late Devonian sarcopterygian evolution.

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New information on the giant Devonian lobe-finned fishEdenopteronfrom the New South Wales south coast

Cited by 9 publications

References 54 publications

Asia–Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations

Asia–Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations

A high latitude Gondwanan species of the Late Devonian tristichopterid Hyneria (Osteichthyes: Sarcopterygii)

Second species ofEusthenodon(Tristichopteridae, Sarcopterygii) from the Upper Devonian (Famennian) Catskill Formation of Pennsylvania, U.S.A., and a review of globalEusthenodonoccurrence

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