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    Article

    Copulation in antiarch placoderms and the origin of gnathostome internal fertilization

    The discovery of claspers in fossils of antiarch placoderms, an ancient group of armoured fish, suggests that internal fertilization was the ancestral type of reproduction for all jawed vertebrates: this contr...

    John A. Long, Elga Mark-Kurik, Zerina Johanson, Michael S. Y. Lee, Gavin C. Young… in Nature (2015)

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    Article

    The pectoral fin of Panderichthys and the origin of digits

    Early hypotheses suggested that the digits of tetrapods (land vertebrates) were homologues of the fin radials of fish, but this idea fell out of favour based on developmental studies and also on the fin of Pander...

    Catherine A. Boisvert, Elga Mark-Kurik, Per E. Ahlberg in Nature (2008)