New coelacanth material from the Middle Triassic of eastern Switzerland, and comments on the taxic diversity of actinistans

Cavin, Lionel; Furrer, Heinz; Obrist, Christian

doi:10.1007/s00015-013-0143-7

Cited by 27 publications

(100 citation statements)

References 22 publications

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“…We notice that several character codings for Guizhoucoelacanthus, also used in Wen et al (2013) and in Cavin et al (2013), were in discrepancy with the description and the figures of Geng et al (2009). Geng et al coded Guizhoucoelacanthus as having anterior and posterior parietals of dissimilar size (char.…”

Section: Methodscontrasting

confidence: 73%

“…10 and 51). The clade Latimeriidae has the same content as in Dutel et al (2012) and Cavin et al (2013), except that in the former study Garnbergia is located as the sister group of latimerioids, while it is located as the sister-group of all other latimeriids here. Libys and Megalocoelacanthus form a clade supported by the same unambiguous (char.…”

Section: Methodsmentioning

confidence: 60%

“…15), without their ventral extremity, plus fragments of several smaller ones are present. The dorsal extremity is rounded, but not enlarged as in Ticinepomis (Cavin et al 2013). The vertical branch is slightly sigmoidal and a triangular groove is dug on the posterior margin, at the level of the enlargement of the bone.…”

Section: Methodsmentioning

confidence: 93%

“…We added to the original datamatrix the characters 109 (Friedman and Coates 2006) and 110 (Dutel et al 2012), with corrections of coding from Clément (2005) and Brito et al (2010). Additional coding were made by Cavin et al (2013) for Ticinepomis and character corrections were proposed by Wendruff (2013) for Piveteauia on the basis of previous descriptions. We added character states for Euporosteus from Zhu et al (2012).…”

Section: Methodsmentioning

confidence: 99%

“…with the highest peak probably corresponding to a radiation event following the Permo-Triassic mass extinction in the Early Triassic (Cloutier 1991;Forey 1998;Schultze 2004;Wen et al 2013;Cavin et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Dobrogeria aegyssensis, a new early Spathian (Early Triassic) coelacanth from North Dobrogea (Romania)

Cavin¹,

Grădinaru²

2014

Acta Geologica Polonica

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ABSTRACT:Cavin, L. and Grădinaru, E. 2014. Dobrogeria aegyssensis, a new early Spathian (Early Triassic) coelacanth from North Dobrogea (Romania). Acta Geologica Polonica, 64 (2), 161-187. Warszawa.The Early Triassic witnessed the highest taxic diversity of coelacanths (or Actinistia), a clade with a single living genus today. This peak of diversity is accentuated here with the description of a new coelacanth discovered in the lower Spathian (Upper Olenekian, Lower Triassic) cropping out in the Tulcea Veche (Old Tulcea) promontory, in the city of Tulcea, in North Dobrogea, Romania. The bone remains were preserved in a block of limestone, which was chemically dissolved. The resulting 3D and matrix-free ossifications correspond mostly to elements of the skull and branchial apparatus. Posterior parietals, postparietal with associated prootic and basisphenoid allow a precise description of the neurocranium. Ossifications of the lower jaw, together with branchial and pectoral elements, complete the description of this coelacanth and support the coining of a new generic and specific name, Dobrogeria aegyssensis. A phylogenetic analysis of actinistians with the new species recovers clades which were found in most recent analyses, i.e. the Sasseniidae, the Laugiidae, the Coelacanthiformes, the Latimerioidei, the Mawsoniidae and the Latimeriidae, and identifies the new taxon as a non-latimerioid coelacanthiform.

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Section: Methodscontrasting

confidence: 73%

Section: Methodsmentioning

confidence: 60%

Section: Methodsmentioning

confidence: 93%