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- plural form of
2009 February 26, John A. Long et al., “Devonian arthrodire embryos and the origin of internal fertilization in vertebrates”, Nature, volume 457, number 7233, DOI:10.1038/nature07732, pages 1124-1127:
- A comparable structure is unknown in early osteichthyan pelvic girdles, although juvenile sturgeons do show a series of pelvic basals in similar topological position to the basipterygium linking the last radial with the metapterygium 21 .