Stable isotope study of a new chondrichthyan fauna (Kimmeridgian, Porrentruy, Swiss Jura): an unusual freshwater-influenced isotopic composition for the hybodont shark <i>Asteracanthus</i>

Leuzinger, L.; Kocsis, L.; Billon-Bruyat, J.-P.; Spezzaferri, S.; Vennemann, T.

doi:https://doi.org/10.5194/bg-12-6945-2015

Articles | Volume 12, issue 23

https://doi.org/10.5194/bg-12-6945-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-12-6945-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 12, issue 23

Research article

|

07 Dec 2015

Research article |

| 07 Dec 2015

Stable isotope study of a new chondrichthyan fauna (Kimmeridgian, Porrentruy, Swiss Jura): an unusual freshwater-influenced isotopic composition for the hybodont shark Asteracanthus

L. Leuzinger, L. Kocsis, J.-P. Billon-Bruyat, S. Spezzaferri, and T. Vennemann

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Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC C5631: 'Comments on the manuscript bg-2015-275', Jan Fischer, 22 Sep 2015
- AC C6470: 'Answer to comment bdg-12-C5631-2015 by referee Jan Fischer', Léa Leuzinger, 14 Oct 2015
RC C6417: 'Comments on the manuscript by Leuzinger et al.', Romain Amiot, 12 Oct 2015
- AC C6800: 'Answer to comment bgd-12-C6417-2015 by referee Romain Amiot', Léa Leuzinger, 20 Oct 2015

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (Editor review) (16 Oct 2015) by Emmanuelle J. Javaux

AR by Léa Leuzinger on behalf of the Authors (30 Oct 2015) Author's response Manuscript

ED: Publish as is (25 Nov 2015) by Emmanuelle J. Javaux

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Short summary

We measured the oxygen isotopic composition of Late Jurassic chondrichthyan teeth (sharks, rays, chimaeras) from the Swiss Jura to get ecological information. The main finding is that the extinct shark Asteracanthus (Hybodontiformes) could inhabit reduced salinity areas, although previous studies on other European localities always resulted in a clear marine isotopic signal for this genus. We propose a mainly marine ecology coupled with excursions into areas of lower salinity in our study site.