A new Ginglymodi (Actinopterygii, Holostei) from the Late Jurassic–Early Cretaceous of Thailand, with comments on the early diversification of Lepisosteiformes in Southeast Asia

Deesri, Uthumporn; Jintasakul, Pratueng; Cavin, Lionel

doi:10.1080/02724634.2016.1225747

Cited by 462 publications

(16 citation statements)

References 31 publications

(24 reference statements)

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“…More recent cladistic analyses have either retrieved the Macrosemiidae as the most basal Ginglymodi (Xu and Wu, 2012;Cavin et al, 2013;Deesri et al, 2014Deesri et al, , 2016, or well nested within a monophyletic Semionotiformes to the exclusion of gars and other lepisosteiforms (López-Arbarello, 2012;López-Arbarello and Wencker, 2016;Sun and Ni, 2018;Cavin et al, 2018;López-Arbarello and Sferco, 2018). The inclusion of the five species of Eosemiontous in the cladistic analysis supports the second hypothesis encompassing two main ginglymodian subclades Lepisosteiformes and Semionotiformes, the latter including the macrosemiids.…”

Section: Phylogenymentioning

confidence: 67%

“…Similarly, the genus Lophionotus is not monophyletic and its three species join Neosemionotus puntanus in a polytomy representing an unexpected clade, which is the sister-group to all other semionotiforms. The Early Creataceous N. puntanus from central Argentina has taken very different phylogenetic positions either as the sister-taxon to Lepisosteiformes (Sun and Ni, 2017;López-Arbarello and Sferco, 2018) or the sister-taxon of Semionotiformes (Deesri et al, 2016;Gibson, 2016;Cavin et al, 2018), or its relationships remained unresolved (López-Arbarello, 2012; Gibson, 2013b). These controversial results strongly indicate that more research is needed to achieve a more robust hypothesis of the phylogenetic relationships within Semionotiformes.…”

Section: Phylogenymentioning

confidence: 99%

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Taxonomy and phylogeny of Eosemionotus Stolley, 1920 (Neopterygii: Ginglymodi) from the Middle Triassic of Europe

López‐Arbarello¹,

Bürgin²,

Furrer³

et al. 2019

Palaeontol Electron

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Over 80 years the actinopterygian genus Eosemionotus was known from a single species, E. vogeli, from the German Muschelkalk (Anisian). A second species was published in 2004, E. ceresiensis, from the upper Besano Formation (lowermost Ladinian) of Monte San Giorgio, Switzerland. New excellently preserved specimens recovered from the Cassina and Sceltrich beds (Meride Limestone; Ladinian) in this latter area, triggered a new study. Consequently, three new species are established: E. diskosomus, E. sceltrichensis, and E. minutus, including differential diagnoses for the five species, which differ in body proportions, relative position of the fins, the morphology of several skull bones, squamation pattern, and some meristic characters (e.g., number of premaxillary teeth, and branchiostegal rays). The cladistic analysis retrieved Eosemionotus as the oldest Macrosemiidae within the order Semionotiformes (Ginglymodi). The monophyly of the genus and its sister-group relationships with the other macrosemiids are among the best supported nodes with high Bremer, jackknife and bootstrap values, and numerous synapomorphies. The pattern of phylogenetic relationships between the five species of Eosemionotus indicates that the Muschelkalk species E. vogeli originated through dispersal from the Tethys into the Germanic Basin, most probably across the Silesian-Moravian or the East Carpathian gates before the late Anisian. This very speciose genus, so far almost restricted to the Middle Triassic, has also been reported from localities in Eastern Switzerland, the Netherlands, Spain, Slovenia, and China. Pending the taxonomic and phylogenetic study of these other material of Eosemionotus, the origin of the genus in the Western or Eastern Tethys remains enigmatic.

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Section: Phylogenymentioning

confidence: 67%

Section: Phylogenymentioning

confidence: 99%

Taxonomy and phylogeny of Eosemionotus Stolley, 1920 (Neopterygii: Ginglymodi) from the Middle Triassic of Europe

López‐Arbarello¹,

Bürgin²,

Furrer³

et al. 2019

Palaeontol Electron

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“…[ 27 ] and Deesri et al . [ 31 , 32 ], the species † Isanichthys palustris is the most basal lepisosteoid in López-Arbarello and Wencker [ 36 ], but the two species of this genus are included in † Lepidotidae in the hypotheses presented here (figures 8 and 9 ), although the relationships of the taxa within † Lepidotidae are variable in the implied weighting analyses. Similarly, according to Cavin et al .…”

Section: Phylogenetic Analysesmentioning

confidence: 99%

Neopterygian phylogeny: the merger assay

López‐Arbarello¹,

Sferco

2018

R. Soc. open sci.

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The phylogenetic relationships of the recently described genus †Ticinolepis from the Middle Triassic of the Monte San Giorgio are explored through cladistic analyses of the so far largest morphological dataset for fossil actinopterygians, including representatives of the crown-neopterygian clades Halecomorphi, Ginglymodi and Teleostei, and merging the characters from previously published systematic studies together with newly proposed characters. †Ticinolepis is retrieved as the most basal Ginglymodi and our results support the monophyly of Teleostei and Holostei, as well as Halecomorphi and Ginglymodi within the latter clade. The patterns of relationships within these clades mostly agree with those of previous studies, although a few important differences require future research. According to our results, ionoscopiforms are not monophyletic, caturids are not amiiforms and leptolepids and luisiellids form a monophyletic clade. Our phylogenetic hypothesis confirms the rapid radiation of the holostean clades Halecomorphi and Ginglymodi during the Early and Middle Triassic and the radiation of pholidophoriform teleosts during the Late Triassic. Crown-group Halecomorphi have an enormous ghost lineage throughout half of the Mesozoic, but ginglymodians and teleosts show a second radiation during the Early Jurassic. The crown-groups of Halecomorphi, Ginglymodi and Teleostei originated within parallel events of radiation during the Late Jurassic.

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“…Remarks: Lepisosteid elements from vertebrate microfossil localities of Late Cretaceous age have formerly been referred to Lepisosteus. However, in a recent study of the group by Grande (2010), Atractosteus spatula, the alligator gar, was considered to be generically distinct, with several extant forms-and some fossil forms as old as the Late Cretaceous-being included in the genus. Grande (2010) recognized that, in part, these taxa differ in the develop-ment of a dorsal peg on the flank scales.…”

Section: Remarksmentioning

confidence: 99%

“…However, in a recent study of the group by Grande (2010), Atractosteus spatula, the alligator gar, was considered to be generically distinct, with several extant forms-and some fossil forms as old as the Late Cretaceous-being included in the genus. Grande (2010) recognized that, in part, these taxa differ in the develop-ment of a dorsal peg on the flank scales. In Lepisosteus, this is distinct, while in Atractosteus, a dorsal peg is absent or only weakly developed.…”

Section: Remarksmentioning

confidence: 99%

Non-marine fish of the late Santonian Milk River Formation of Alberta, Canada – evidence from vertebrate microfossil localities

Brinkman

Neuman

Divay

2017

Vert. Anat. Morph. Palaeo.

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The diversity of fishes from the late Santonian Milk River Formation is investigated using a combined taxonomic/morphotype approach. Twenty-one taxa are present, including four elasmobranchs, seven basal actinopterygians, and of ten teleosts. The Milk River fish assemblage is more similar to assemblages from southern Utah than it is to the late Campanian assemblage of Alberta in the presence of the elasmobranch Lonchidion and a member of amiid subfamily Vidalamiinae, the relatively high abundance of the ostariophysan teleost U3/BvD, and the absence of sturgeon, Holostean A, Holostean B, and Coriops. This similarity is hypothesized to be the result of a northern shift in the distribution of these taxa during times of high global temperature, resulting in the presence of a “southern” faunal assemblage in Alberta during the late Santonian. In the relative abundance patterns of major groups of fish, the Milk River Formation assemblage is similar to late Campanian assemblages and different from those of late Maastrichtian in that amiids and lepsisoteids are of relatively low abundance. The abundance of acanthomorph teleosts in the Milk River Formation is similar to that of contemporaneous assemblages from Utah, which supports a pattern of increasing abundance of acanthomorphs from their first occurrence in non-marine vertebrate assemblages of the Western Interior in the Coniacian through to the end of the Cretaceous.

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A new Ginglymodi (Actinopterygii, Holostei) from the Late Jurassic–Early Cretaceous of Thailand, with comments on the early diversification of Lepisosteiformes in Southeast Asia

Cited by 462 publications

References 31 publications

Taxonomy and phylogeny of Eosemionotus Stolley, 1920 (Neopterygii: Ginglymodi) from the Middle Triassic of Europe

Taxonomy and phylogeny of Eosemionotus Stolley, 1920 (Neopterygii: Ginglymodi) from the Middle Triassic of Europe

Neopterygian phylogeny: the merger assay

Non-marine fish of the late Santonian Milk River Formation of Alberta, Canada – evidence from vertebrate microfossil localities

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