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...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Nature Publishing Group
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/22630 |