Habitat Availability, Jurassic and Cretaceous Origins of the Deep-Bodied Shark Morphotype and the Rise of Pelagic Sharks
Descripción general
Resumen del artículo
This study uses phylogenetic analysis and fossil data to trace the evolution of shark body shape, finding three distinct morphotypes and linking the rise of the pelagic (deep-bodied) form to increased habitat availability during the Jurassic and Cretaceous periods.
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Sharks started as flat, bottom-dwelling creatures. When the oceans got deeper and warmer, some evolved sleeker bodies for hunting in the open water.
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Explicación de la calificación
This study provides valuable insights into shark evolution by combining phylogenetic analysis with environmental data. While some methodological limitations exist, the findings are robust and contribute significantly to our understanding of the interplay between morphology, ecology, and environmental change in deep time.
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