A giant marine coelacanth from the Jurassic of Normandy, France

Dutel, Hugo; Pennetier, Elisabeth; Pennetier, Gérard

doi:10.1080/02724634.2014.838176

Cited by 13 publications

(23 citation statements)

References 10 publications

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“…in the length range of the extant Latimeria. Trachymetopon was then discovered in the Middle Jurassic with giant forms discovered in Callovian strata in Normandy, France, described by Dutel et al 25 and in the present study.…”

Section: Trachymetopon Stratigraphical Rangesupporting

confidence: 74%

“…Dutel et al 25 referred an isolated palatoquadrate (MPV 2012.1.1) found in the Callovian (Middle Jurassic) of the Vaches Noires, France, to Trachymetopon sp. This specimen corresponds to a large individual estimated to reach 4 meters in length.…”

Section: A Review Of Giant Mesozoic Coelacanthsmentioning

confidence: 99%

“…23,24 ), with Trachymetopon sp. 25 from the Middle Jurassic of Europe, but also among the latimeriids with Megalocoelacanthus from the Late Cretaceous of North America 26,27 . The fossil record of coelacanths reveals a relative abundance of large-sized species, but this feature has never been regarded as an evolutionary trait that characterizes the clade, except by Wenz 23 , who pointed out a general trend towards large size within several Mesozoic lineages.…”

Section: Introductionmentioning

confidence: 99%

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Giant Mesozoic Coelacanths (Osteichthyes, Actinistia) Reveal High Body Size Disparity Decoupled From Taxic Diversity

Cavin

Piuz

Ferrante

et al. 2021

Preprint

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The positive correlation between speciation rates and morphological evolution expressed by body size is a macroevolutionary trait of vertebrates. Although taxic diversification and morphological evolution are slow in coelacanths, their fossil record indicates that large and small species coexisted, which calls into question the link between morphological and body size disparities. Here, we describe and reassess fossils of giant coelacanths. Two genera reached up to 5 meters long, placing them among the ten largest bony fish that ever lived. The disparity in body size adjusted to taxic diversity is much greater in coelacanths than in ray-finned fishes, and is decoupled from a high rate of speciation or a high rate of morphological evolution. Genomic and physiological characteristics of the extant Latimeria may reflect how the extinct relatives grew to such a large size. These characteristics highlight new evolutionary traits specific to these “living fossils”.

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Section: Trachymetopon Stratigraphical Rangesupporting

confidence: 74%

Section: A Review Of Giant Mesozoic Coelacanthsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Giant Mesozoic Coelacanths (Osteichthyes, Actinistia) Reveal High Body Size Disparity Decoupled From Taxic Diversity

Cavin

Piuz

Ferrante

et al. 2021

Preprint

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“…fish several meters long, have long been described among the mawsoniids with Mawsonia gigas by Woodward in 1907 24 , from the Early Cretaceous of Brazil, then with Axelrodichthys lavocati from the ‘mid’ Cretaceous of North Africa 25 , 26 , with Trachymetopon sp. 27 from the Middle Jurassic of Europe, but also among the latimeriids with Megalocoelacanthus from the Late Cretaceous of North America 28 , 29 . The fossil record of coelacanths reveals a relative abundance of large-sized species as previously observed by Wenz 25 and Dutel et al 27 , 30 .…”

Section: Introductionmentioning

confidence: 99%

Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity

Cavin

Piuz

Ferrante

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The positive correlation between speciation rates and morphological evolution expressed by body size is a macroevolutionary trait of vertebrates. Although taxic diversification and morphological evolution are slow in coelacanths, their fossil record indicates that large and small species coexisted, which calls into question the link between morphological and body size disparities. Here, we describe and reassess fossils of giant coelacanths. Two genera reached up to 5 m long, placing them among the ten largest bony fish that ever lived. The disparity in body size adjusted to taxic diversity is much greater in coelacanths than in ray-finned fishes. Previous studies have shown that rates of speciation and rates of morphological evolution are overall low in this group, and our results indicate that these parameters are decoupled from the disparity in body size in coelacanths. Genomic and physiological characteristics of the extant Latimeria may reflect how the extinct relatives grew to such a large size. These characteristics highlight new evolutionary traits specific to these “living fossils”.

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“…Recently, the Early Jurassic Trachymetopon liassicum was included in the mawsoniids by Dutel, Herbin & Clément (2015). This genus, originally described from the Lower Toarcian marine locality of Holzmaden (Hennig, 1951) was subsequently recorded in the Upper Callovian of the Vaches Noires in Normandy (Dutel, Pennetier & Pennetier, 2014). As far as it can be assessed from the published data, the angular and the basisphenoid of Trachymetopon are reminiscent of the specimen from Peygros.…”

Section: Discussionmentioning

confidence: 99%

A mawsoniid coelacanth (Sarcopterygii: Actinistia) from the Rhaetian (Upper Triassic) of the Peygros quarry, Le Thoronet (Var, southeastern France)

et al. 2017

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Remains of a coelacanth specimen are described from Rhaetian deposits of the Var Department, southeastern France. They comprise the lower part of a branchial apparatus associated with a left lower jaw and a basisphenoid. Osteological features of the angular and basisphenoid and the teeth ornamentation allow the inclusion of the specimen in the mawsoniid family, genus and species indeterminate. Mawsoniids are known in freshwater environments from the Triassic of North America and from the Cretaceous of Western Gondwana and Europe, as well as from Late Jurassic marine environments from Europe. The new discovery here reported represents the first coelacanth from the marine Triassic of France and improves the understanding of the palaeobiogeography of the Mawsoniidae.

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A giant marine coelacanth from the Jurassic of Normandy, France

Cited by 13 publications

References 10 publications

Giant Mesozoic Coelacanths (Osteichthyes, Actinistia) Reveal High Body Size Disparity Decoupled From Taxic Diversity

Giant Mesozoic Coelacanths (Osteichthyes, Actinistia) Reveal High Body Size Disparity Decoupled From Taxic Diversity

Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity

A mawsoniid coelacanth (Sarcopterygii: Actinistia) from the Rhaetian (Upper Triassic) of the Peygros quarry, Le Thoronet (Var, southeastern France)

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