Evolution of gastrulation in the ray-fin
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Mark S. Cooper; Valerie C. Virta
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Article
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2007
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John Wiley and Sons
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English
β 825 KB
## Abstract Sometime before or during the early Mesozoic era, new lineages of actinopterygian (rayβfinned) fishes radically transformed their mode of gastrulation. During this evolutionary transformation, yolky endoderm was a hotspot for ontogenetic change. As holoblastic cleavage patterns were mod