Copulation in antiarch placoderms and the origin of gnathostome internal fertilization

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Copulation in antiarch placoderms and the origin of gnathostome internal fertilization

Reproduction in jawed vertebrates (gnathostomes) involves either external or internal fertilization1. It is commonly argued that internal fertilization can evolve from external, but not the reverse. Male copulatory claspers are present in certain placoderms 2, 3, 4, fossil jawed vertebrates retrieve...

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Bibliographic Details
Main Authors:	Long, J., Mark-Kurik, E., Johanson, Z., Lee, M., Young, G., Min, Z., Ahlberg, P., Newman, M., Jones, R., den Blaauwen, J., Choo, B., Trinajstic, Katherine
Format:	Journal Article
Published:	Nature Publishing Group 2015
Online Access:	http://hdl.handle.net/20.500.11937/22630

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