Evolutionary relationships among bullhead sharks (Chondrichthyes, Heterodontiformes)

Show simple item record

dc.contributor.author Slater, Tiffany S.
dc.contributor.author Ashbrook, Kate
dc.date.accessioned 2020-07-30T12:16:30Z
dc.date.available 2020-07-30T12:16:30Z
dc.date.issued 2020-02-16
dc.identifier.citation Slater, T. S., Ashbrook, K. and Kriwet, J. (2020) 'Evolutionary relationships among bullhead sharks (Chondrichthyes, Heterodontiformes)', Papers in Palaeontology, 6(3), pp. 425-437. doi: 10.1002/spp2.1299 en
dc.identifier.volume 6 en
dc.identifier.issued 3 en
dc.identifier.startpage 425 en
dc.identifier.endpage 437 en
dc.identifier.issn 2056-2799
dc.identifier.uri http://hdl.handle.net/10468/10339
dc.identifier.doi 10.1002/spp2.1299 en
dc.description.abstract The evolution of modern sharks, skates and rays (Elasmobranchii) is largely enigmatic due to their possession of a labile cartilaginous skeleton; consequently, taxonomic assignment often depends on isolated teeth. Bullhead sharks (Heterodontiformes) are a group of basal neoselachians, thus their remains and relationships are integral to understanding elasmobranch evolution. Herein we fully describe †Paracestracion danieli – a bullhead shark from the Late Jurassic plattenkalks of Eichstätt, Germany (150–154 Ma) – for its inclusion in cladistic analysis (utilizing parsimonious principles) of morphological characters from complete †Paracestracion and Heterodontus fossil specimens as well as extant forms of the latter. The presence of two separate monophyletic clades within Heterodontiformes was confirmed, based on predominantly non‐dental characters, which show a strong divergence in body morphology between †Paracestracion and Heterodontus ; the latter possessing a first dorsal fin and pectoral fins that are more anterior and pelvic fins that are more posterior. This study emphasizes the importance of including non‐dental features in heterodontiform systematics (as compared with the use of dental characters alone) and supports the erection of the family †Paracestracionidae. Further, phylogenetic analysis of molecular data from five extant species suggests that crown heterodontiforms arose from a diversification event 42.58 Ma off the west coast of the Americas. en
dc.description.sponsorship Palaeontological Association (Undergraduate Research Bursary PA-UB201606) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Wiley en
dc.relation.uri https://onlinelibrary.wiley.com/doi/full/10.1002/spp2.1299
dc.rights © The Palaeontological Association 2020. This is the peer reviewed version of the following article: Slater, T.S., Ashbrook, K. and Kriwet, J. (2020), Evolutionary relationships among bullhead sharks (Chondrichthyes, Heterodontiformes). Pap Palaeontol, 6: 425-437, which has been published in final form at https://doi.org/10.1002/spp2.1299. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. en
dc.subject Elasmobranch evolution en
dc.subject Late Jurassic en
dc.subject Paracestracionidae en
dc.subject Heterodontus morphology en
dc.subject Bullhead sharks en
dc.title Evolutionary relationships among bullhead sharks (Chondrichthyes, Heterodontiformes) en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Tiffany S. Slater, School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland. +353-21-490-3000 Email: tiffany.slater@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 12 months after publication by request of the publisher. en
dc.check.date 2021-02-16
dc.description.version Published Version en
dc.contributor.funder Palaeontological Association en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Papers in Palaeontology en
dc.internal.IRISemailaddress tiffany.slater@ucc.ie en
dc.identifier.eissn 2056-2802

Files in this item

This item appears in the following Collection(s)

Show simple item record

This website uses cookies. By using this website, you consent to the use of cookies in accordance with the UCC Privacy and Cookies Statement. For more information about cookies and how you can disable them, visit our Privacy and Cookies statement