Morphology and Histology of Acanthodian Fin Spines from the Late Silurian Ramsasa E Locality, Skane, Sweden Anna Jerve, Oskar Bremer, Sophie Sanchez, Per E
Morphology and histology of acanthodian fin spines from the late Silurian Ramsasa E locality, Skane, Sweden Anna Jerve, Oskar Bremer, Sophie Sanchez, Per E. Ahlberg To cite this version: Anna Jerve, Oskar Bremer, Sophie Sanchez, Per E. Ahlberg. Morphology and histology of acanthodian fin spines from the late Silurian Ramsasa E locality, Skane, Sweden. Palaeontologia Electronica, Coquina Press, 2017, 20 (3), pp.20.3.56A-1-20.3.56A-19. 10.26879/749. hal-02976007 HAL Id: hal-02976007 https://hal.archives-ouvertes.fr/hal-02976007 Submitted on 23 Oct 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Palaeontologia Electronica palaeo-electronica.org Morphology and histology of acanthodian fin spines from the late Silurian Ramsåsa E locality, Skåne, Sweden Anna Jerve, Oskar Bremer, Sophie Sanchez, and Per E. Ahlberg ABSTRACT Comparisons of acanthodians to extant gnathostomes are often hampered by the paucity of mineralized structures in their endoskeleton, which limits the potential pres- ervation of phylogenetically informative traits. Fin spines, mineralized dermal struc- tures that sit anterior to fins, are found on both stem- and crown-group gnathostomes, and represent an additional potential source of comparative data for studying acantho- dian relationships with the other groups of early gnathostomes.
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