First record of mawsoniid coelacanths (Actinistia, Sarcopterygii) from the marine Rhaetian (Upper Triassic) of Bonenburg, Germany

Hartung, Josephina; Sander, P. Martin; Friedman, Matt

doi:10.1080/02724634.2021.1931258

Cited by 4 publications

(2 citation statements)

References 27 publications

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“…Apart from these coelacanths identified at a specific level, other coelacanth material is currently not identified at generic or specific levels, we could mention a relative of Foreyia from the Anisian (Middle Triassic) Dont Formation of Northern Dolomites in Italy (Renesto & Kustatscher, 2019 ), a complete but poorly preserved fossil from the Anisian (Middle Triassic) of the Massif des Vosges in France (Gall et al, 1974 ), several disarticulated bones representing different individuals from the Ladinian (Middle Triassic) of the Schwäbisch Hall Formation of Baden-Württemberg, Germany (Hagdorn & Mutter, 2011 ) and remains of mawsoniid coelacanths from Rhaetian deposits (Late Triassic) of France (Deesri et al, 2018 ) and Germany (Hartung et al, 2021 ). From this list of Triassic coelacanths, we only compare those that share similarities with Ticinepomis .…”

Section: Discussionmentioning

confidence: 99%

Revision of the Middle Triassic coelacanth Ticinepomis Rieppel 1980 (Actinistia, Latimeriidae) with paleobiological and paleoecological considerations

Ferrante,

Furrer,

Martini

et al. 2023

Swiss J Palaeontol

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Coelacanths form today an impoverished clade of sarcopterygian fishes, which were somewhat more diverse during their evolutionary history, especially in the Triassic. Since the first description of the coelacanth Ticinepomis peyeri from the Besano Formation of the UNESCO World Heritage Site of Monte San Giorgio (Canton Ticino, Switzerland), the diversity of coelacanths in the Middle Triassic of this area of the western Paleo-Tethys has been enriched with discoveries of other fossil materials. At Monte San Giorgio, two specimens of Heptanema paradoxum and several specimens of the unusual coelacanth Rieppeliaheinzfurreri, have been reported from the Meride Limestone and the Besano Formation, respectively. Another unusual coelacanth, Foreyia maxkuhni, and two specimens referred to Ticinepomis cf. T. peyeri have been described from the isochronous and paleogeographical close Prosanto Formation at the Ducanfurgga and Strel sites (near Davos, Canton Graubünden). In the framework of the revision of the coelacanth material from the Besano Formation kept in the collection of the Paläontologisches Institut und Museum der Universität Zürich (Switzerland), we reviewed the genus Ticinepomis on the basis of the holotype and four new referred specimens. Several morphological traits that were little and/or not understood in T. peyeri are here clarified. We re-evaluate the taxonomic attribution of the material of Ticinepomis cf. T. peyeri from the Prosanto Formation. Morphological characters are different enough from the type species, T. peyeri, to erect a new species, Ticinepomis ducanensis sp. nov., which is shown to be also present in the Besano Formation of Monte San Giorgio, where it is represented by fragmentary bone elements. The recognition of a new coelacanth species indicates that the diversity of this slow-evolving lineage was particularly high in this part of the Western Tethys during the Middle Triassic, especially between 242 and 240 million years ago.

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Section: Discussionmentioning

confidence: 99%

Revision of the Middle Triassic coelacanth Ticinepomis Rieppel 1980 (Actinistia, Latimeriidae) with paleobiological and paleoecological considerations

Ferrante,

Furrer,

Martini

et al. 2023

Swiss J Palaeontol

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“…The presence of Axelrodichthys (originally described in the Lower Cretaceous of Brazil, and subsequently reported in the Upper Cretaceous of Madagascar) was confirmed in Europe through the finding of several remains in lacustrine and fluvial sediments from the Upper Cretaceous of France, with the description of a new endemic species, A. megadromos , including one of the youngest records of fossil coelacanths (early Maastrichtian) (Cavin et al, 2016, 2020). The European record has been very recently expanded to the Rhaetian (Upper Triassic) of France and Germany, through the findings of fragmentary remains classified at family level, coming from marine environments (Deesri et al, 2018; Hartung et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

An enigmatic large mawsoniid coelacanth (Sarcopterygii, Actinistia) from the Upper Jurassic Kimmeridge Clay Formation of England

Toriño

Gausden

Etches

et al. 2022

Journal of Vertebrate Paleontology

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A large mawsoniid coelacanth from the lower part of the marine Kimmeridge Clay Formation of England (Kimmeridgian, Upper Jurassic) is studied here. The material is constituted by a group of bones from the head and shoulder girdle of a considerably large individual (estimated length ca. 1.5 m), including the left angular, left dentary, left prearticular, left palatoquadrate complex, both ceratohyals and right cleithrum. Characters such as the coarse external ornamentation of the angular, and the robustness of the quadrate and the cleithrum allow classification of the individual as a member of the Mawsoniidae; whereas the configuration of external bones of the lower jaw (ornamentation of the angular constituted mainly by longitudinal ridges, the presence of a lateral swelling in the dentary) indicates stronger Gondwanan affinities than previously expected (i.e., with the genus Mawsonia, up to now only recorded in South America by the end of the Jurassic). Considering the above, two alternative evolutionary, paleobiogeographic, and taxonomic scenarios are discussed: (1) the new individual can be referred to the European mawsoniid genus Trachymetopon (Lower–Middle Jurassic), in which case it should be assumed this genus reached the Upper Jurassic, and with a morphological variability higher than previously suspected (including some characters previously assumed as diagnostic for Mawsonia). Or (2) an unknown Mawsonia-like form was present in the Upper Jurassic of Europe. The last scenario puts the identification of isolated elements of European Jurassic giant mawsoniids in a new complex taxonomic and paleobiogeographic context, which will deserve further research.

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New records of Mawsoniidae (Actinistia) from the Romualdo Formation, Aptian-Albian of the Araripe Basin in Pernambuco state, Brazil

Barbosa

Silva

Franca

2022

Journal of South American Earth Sciences

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First record of mawsoniid coelacanths (Actinistia, Sarcopterygii) from the marine Rhaetian (Upper Triassic) of Bonenburg, Germany

Cited by 4 publications

References 27 publications

Revision of the Middle Triassic coelacanth Ticinepomis Rieppel 1980 (Actinistia, Latimeriidae) with paleobiological and paleoecological considerations

Revision of the Middle Triassic coelacanth Ticinepomis Rieppel 1980 (Actinistia, Latimeriidae) with paleobiological and paleoecological considerations

An enigmatic large mawsoniid coelacanth (Sarcopterygii, Actinistia) from the Upper Jurassic Kimmeridge Clay Formation of England

New records of Mawsoniidae (Actinistia) from the Romualdo Formation, Aptian-Albian of the Araripe Basin in Pernambuco state, Brazil

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